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Dr. Sharizal earned a Ph.D. in Mechanical Engineering from The University of Manchester, United Kingdom in 2018. He is also recognized as 'Professional Technologist (Ts.)' awarded by the Malaysia Board of Technologists (MBOT). Dr. Sharizal is professionally registered as ‘Chartered Engineer (CEng)’ by The Engineering Council, United Kingdom. Dr. Sharizal has worked for more than 8 years in various manufacturing industries. He then joined Universiti Malaysia Kelantan (UMK), Malaysia as assistant lecturer in 2014 under the Faculty of Bioengineering & Technology and was promoted to senior lecturer in 2018. Dr. Sharizal does research in advanced machining, manufacturing system designs, life-cycle assessment (LCA), wood mechanics and structural engineering, and engineering management.
Carbon fibre reinforced polymer composites (CFRPs) can be costly to manufacture, but they are typically used anywhere a high strength-to-weight ratio and a high steadiness (rigidity) are needed in many industrial applications, particularly in aerospace. Drilling composites with a laser tends to be a feasible method since one of the composite phases is often in the form of a polymer, and polymers in general have a very high absorption coefficient for infrared radiation. The feasibility of sequential laser–mechanical drilling for a thick CFRP is discussed in this article. A 1 kW fibre laser was chosen as a pre-drilling instrument (or initial stage), and mechanical drilling was the final step. The sequential drilling method dropped the overall thrust and torque by an average of 61%, which greatly increased the productivity and reduced the mechanical stress on the cutting tool while also increasing the lifespan of the bit. The sequential drilling (i.e., laser 8 mm and mechanical 8 mm) for both drill bits (i.e., 2- and 3-flute uncoated tungsten carbide) and the laser pre-drilling techniques has demonstrated the highest delamination factor (SFDSR) ratios. A new laser–mechanical sequence drilling technique is thus established, assessed, and tested when thick CFRP composites are drilled.
Sharizal Ahmad Sobri; Robert Heinemann; David Whitehead. Sequential Laser–Mechanical Drilling of Thick Carbon Fibre Reinforced Polymer Composites (CFRP) for Industrial Applications. Polymers 2021, 13, 2136 .
AMA StyleSharizal Ahmad Sobri, Robert Heinemann, David Whitehead. Sequential Laser–Mechanical Drilling of Thick Carbon Fibre Reinforced Polymer Composites (CFRP) for Industrial Applications. Polymers. 2021; 13 (13):2136.
Chicago/Turabian StyleSharizal Ahmad Sobri; Robert Heinemann; David Whitehead. 2021. "Sequential Laser–Mechanical Drilling of Thick Carbon Fibre Reinforced Polymer Composites (CFRP) for Industrial Applications." Polymers 13, no. 13: 2136.
Particleboard is not entirely a wood replacement but a particular material with its properties, making it more effective at different times than heavy or solid wood. The world’s biggest concern is environmental problems with formaldehyde as a particulate board binder that can lead to human carcinogenic agents. A cradle-to-gate life cycle assessment (LCA) of particleboard production was performed using openLCA software. The impact assessment was carried out according to the software’s features. This preliminary investigation aims to analyze the chemical composition of particleboard and identify its environmental impact. The Fourier-transform infrared spectroscopy (FTIR) system was used to track the functional group of aliphatic hydrocarbons, inorganic phosphates, and main aliphatic alcohols found in particleboards made in Malaysia. Based on the FTIR results, aliphatic groups were found in numerous aggravates that the spectroscopic infrared was likely to experience. The most important vibrational modes were C–H, at approximately 3000 cm−1, and –CH deformations around 1460 cm−1 and 1380 cm−1. Eight effect groups demonstrated that 100% of the input and all analyses produced the same relative outcome. The life cycle of a product is determined by pollution of the air, water, and soil. Thus, particleboard has a minimal impact on the environment, except for global warming.
Muhammad Mohd Azman; Sharizal Ahmad Sobri; Mohd Norizan; Mohd Ahmad; Wan Wan Ismail; Kamarul Hambali; Mohd Hairi; Andi Hermawan; Mazlan Mohamed; Pao Teo; Mohammad Taharin; Noorsidi Mat Noor. Life Cycle Assessment (LCA) of Particleboard: Investigation of the Environmental Parameters. Polymers 2021, 13, 2043 .
AMA StyleMuhammad Mohd Azman, Sharizal Ahmad Sobri, Mohd Norizan, Mohd Ahmad, Wan Wan Ismail, Kamarul Hambali, Mohd Hairi, Andi Hermawan, Mazlan Mohamed, Pao Teo, Mohammad Taharin, Noorsidi Mat Noor. Life Cycle Assessment (LCA) of Particleboard: Investigation of the Environmental Parameters. Polymers. 2021; 13 (13):2043.
Chicago/Turabian StyleMuhammad Mohd Azman; Sharizal Ahmad Sobri; Mohd Norizan; Mohd Ahmad; Wan Wan Ismail; Kamarul Hambali; Mohd Hairi; Andi Hermawan; Mazlan Mohamed; Pao Teo; Mohammad Taharin; Noorsidi Mat Noor. 2021. "Life Cycle Assessment (LCA) of Particleboard: Investigation of the Environmental Parameters." Polymers 13, no. 13: 2043.
Significant investigative research has been focusing on the development of corrosion inhibitors for ferrous metal alloys. One of the most extensive investigations is the development of green corrosion inhibitors (GCIs). The GCIs from plant extract, which are the most widely investigated due to inexpensive, renewable, biodegradable and foremost aspect, are safe towards both the environment and human being. The performance of GCIs is evaluated by gravimetric analysis, electrochemical tests as well as theory and computational-based studies. A compilation of the inhibition performance calculated from these methods in various conditions is well reported. Plant extracts proved to be a good corrosion inhibitor where the result of inhibition efficiency is over 80%. This high efficiency is related to the high concentration of active constituent known as phytochemicals. In addition, the performance of GCIs also can be elucidated by the determination of inhibitor type and inhibition mechanism. This review broadly summarised the preparation, performance and inhibition mechanism determination of plant extracts as GCIs for ferrous metal alloys. This review concluded that plant extracts as GCIs were of high potential for corrosion protection of ferrous metal alloy; thus, further improvement action are still necessary to achieve the highest inhibition efficiency of approximately 100%.
Siti Zuliana Salleh; Abdul Hafidz Yusoff; Siti Koriah Zakaria; Mustaffa Ali Azhar Taib; Anasyida Abu Seman; Mohamad Najmi Masri; Mardawani Mohamad; Sarizam Mamat; Sharizal Ahmad Sobri; Arlina Ali; Pao Ter Teo. Plant extracts as green corrosion inhibitor for ferrous metal alloys: A review. Journal of Cleaner Production 2021, 304, 127030 .
AMA StyleSiti Zuliana Salleh, Abdul Hafidz Yusoff, Siti Koriah Zakaria, Mustaffa Ali Azhar Taib, Anasyida Abu Seman, Mohamad Najmi Masri, Mardawani Mohamad, Sarizam Mamat, Sharizal Ahmad Sobri, Arlina Ali, Pao Ter Teo. Plant extracts as green corrosion inhibitor for ferrous metal alloys: A review. Journal of Cleaner Production. 2021; 304 ():127030.
Chicago/Turabian StyleSiti Zuliana Salleh; Abdul Hafidz Yusoff; Siti Koriah Zakaria; Mustaffa Ali Azhar Taib; Anasyida Abu Seman; Mohamad Najmi Masri; Mardawani Mohamad; Sarizam Mamat; Sharizal Ahmad Sobri; Arlina Ali; Pao Ter Teo. 2021. "Plant extracts as green corrosion inhibitor for ferrous metal alloys: A review." Journal of Cleaner Production 304, no. : 127030.
This study examines the effect of the delamination factor on wood composite drilling. Drilling is one of the most important machining operations in the manufacturing process, operating in a variety of ways to make life better every day. The preliminary experiment focuses on the implementation of three drilling strategies to determine the most appropriate for drilling composite and to identify the effect of the machining parameters of wood plastic composite (WPC) drilling. The CNC machining centre is used at the factory of the local company to assist them in the provision of certain production inputs. It is observed that the single step drill peck is the best suited strategy for drill WPC with less delamination at the entrance and exit holes compared to the other two methods, 2-peck and 4-peck drills. Hole tends to create a peel-up and to force the delamination down heavily along the hole edge when using the 4-peck process while the least peel-up pattern happens when using a single-step method. The findings also show a large amount of peel-up delamination as the feed rate increases. Therefore, the final results are also useful in understanding the relationship between the drilling parameters and the cutting experiments.
Muhammad Amirul Zuraik; Sharizal Ahmad Sobri; Nik Asmawie Nik Abdullah; Andi Hermawan; Mazlan Mohamed; Norshah Afizi Shuaib. Preliminary Investigation of Delamination Factor for Drilling Wood Plastic Composites (WPC). IOP Conference Series: Earth and Environmental Science 2020, 596, 012013 .
AMA StyleMuhammad Amirul Zuraik, Sharizal Ahmad Sobri, Nik Asmawie Nik Abdullah, Andi Hermawan, Mazlan Mohamed, Norshah Afizi Shuaib. Preliminary Investigation of Delamination Factor for Drilling Wood Plastic Composites (WPC). IOP Conference Series: Earth and Environmental Science. 2020; 596 (1):012013.
Chicago/Turabian StyleMuhammad Amirul Zuraik; Sharizal Ahmad Sobri; Nik Asmawie Nik Abdullah; Andi Hermawan; Mazlan Mohamed; Norshah Afizi Shuaib. 2020. "Preliminary Investigation of Delamination Factor for Drilling Wood Plastic Composites (WPC)." IOP Conference Series: Earth and Environmental Science 596, no. 1: 012013.
This project aimed to recycle pineapple (Ananas comosus) leaf agro-waste and wastepaper into new paper using simple processing routes that involve pulping, mixing, sieving, compaction and drying. Subsequently, physical and mechanical properties, as well as the morphology of the pineapple leaf fiber (PALF)-based paper were investigated accordingly. Two different samples were prepared whereby the first sample is pineapple leaf fiber mixed with wastepaper, and another sample is pure pineapple leaf fiber paper. The samples were tested for tensile properties by using the universal testing machine, morphological analysis using scanning electron microscopy, and density measurement using a densitometer. It was found that the sample consist of pineapple leaf and wastepaper shows a higher tensile strength than the sample containing only PALF. Moreover, the density of paper with pineapple leaf fiber and wastepaper mix was higher than the paper with only pineapple leaf fiber. In the future, further modification of body formulation is necessary to further improve the properties of the pineapple leaf fiber-based paper.
Pao Ter Teo; Siti Koriah Zakaria; Mustaffa Ali Azhar Taib; Faisal Budiman; Mazlan Mohamed; Abdul Hafidz Yusoff; Sharizal Ahmad Sobri. Recycling of Pineapple (Ananas comosus) Leaf Agro-waste as One of the Raw Materials for Production of Eco-friendly New Paper. IOP Conference Series: Earth and Environmental Science 2020, 596, 012018 .
AMA StylePao Ter Teo, Siti Koriah Zakaria, Mustaffa Ali Azhar Taib, Faisal Budiman, Mazlan Mohamed, Abdul Hafidz Yusoff, Sharizal Ahmad Sobri. Recycling of Pineapple (Ananas comosus) Leaf Agro-waste as One of the Raw Materials for Production of Eco-friendly New Paper. IOP Conference Series: Earth and Environmental Science. 2020; 596 (1):012018.
Chicago/Turabian StylePao Ter Teo; Siti Koriah Zakaria; Mustaffa Ali Azhar Taib; Faisal Budiman; Mazlan Mohamed; Abdul Hafidz Yusoff; Sharizal Ahmad Sobri. 2020. "Recycling of Pineapple (Ananas comosus) Leaf Agro-waste as One of the Raw Materials for Production of Eco-friendly New Paper." IOP Conference Series: Earth and Environmental Science 596, no. 1: 012018.
Carbon fiber reinforced polymer or CFRP composite is the most sort-after material for aircraft manufacturing today and commercial aircraft manufacturers are critically attempting to solve the delamination problem as well as other damages. On the other hand, implementation of laser technology in cutting and drilling composites is now becoming more important as an alternative solution for machining of composites. The major obstacles in laser machining of composites for industrial applications are typically related to inferior kerf width (due to tapered cut), heat-affected zone (HAZ), charring, matrix recession, protruding fibers and potential delamination. Therefore, it is desirable to optimize the machining parameters in order to control the level of heat-induced in machining of CFRP composites. Currently, no comparative study has been conducted between the effects of ring shape and spiral trepanning, which this study might be the potential to apply on drilling thick CFRP composites. High powered lasers are also important in drilling thick CFRP composites. This article reviews the experimental progress in laser machining of CFRP composites, which is intended to help readers to obtain the latest views in order to develop the appropriate machining parameters.
Sharizal Ahmad Sobri; Robert Heinemann; David Whitehead; Mohd Hazim Mohamad Amini; Mazlan Mohamed. Damage to Carbon Fiber Reinforced Polymer Composites (CFRP) by Laser Machining: An Overview. Machining and Machinability of Fiber Reinforced Polymer Composites 2020, 281 -297.
AMA StyleSharizal Ahmad Sobri, Robert Heinemann, David Whitehead, Mohd Hazim Mohamad Amini, Mazlan Mohamed. Damage to Carbon Fiber Reinforced Polymer Composites (CFRP) by Laser Machining: An Overview. Machining and Machinability of Fiber Reinforced Polymer Composites. 2020; ():281-297.
Chicago/Turabian StyleSharizal Ahmad Sobri; Robert Heinemann; David Whitehead; Mohd Hazim Mohamad Amini; Mazlan Mohamed. 2020. "Damage to Carbon Fiber Reinforced Polymer Composites (CFRP) by Laser Machining: An Overview." Machining and Machinability of Fiber Reinforced Polymer Composites , no. : 281-297.
Composites from carbon fibre reinforced polymers (CFRPs) play a significant role in modern manufacturing. They are typically used in aerospace and other industries that require high strength-to-weight ratios. Composite machining, however, remains a challenging job and sometimes is hampered by poor efficiency. Despite considerable research being conducted over the past few years on the machining of composite materials, the material nevertheless suffers from delamination, fibre loss, and imperfect finishing of the fuselage. Laser technology is becoming increasingly popular as an alternative approach to cutting and drilling composites. Experiments have been conducted with a CFRP thickness of 25.4 mm using fibre laser to test the effect of the machining parameters on the primary performance measurements. In this study, different machining criteria are used to assess the fibre laser ability of thick CFRP composites for drilling operation. The experimental findings revealed that a fibre laser is capable of penetrating a thick CFRP to a depth of 22 mm by using a novel drilling procedure.
Sharizal Ahmad Sobri; Robert Heinemann; David Whitehead. Development of Laser Drilling Strategy for Thick Carbon Fibre Reinforced Polymer Composites (CFRP). Polymers 2020, 12, 2674 .
AMA StyleSharizal Ahmad Sobri, Robert Heinemann, David Whitehead. Development of Laser Drilling Strategy for Thick Carbon Fibre Reinforced Polymer Composites (CFRP). Polymers. 2020; 12 (11):2674.
Chicago/Turabian StyleSharizal Ahmad Sobri; Robert Heinemann; David Whitehead. 2020. "Development of Laser Drilling Strategy for Thick Carbon Fibre Reinforced Polymer Composites (CFRP)." Polymers 12, no. 11: 2674.
Carbon fibre-reinforced polymer (CFRP) composite materials play an increasingly important role in modern manufacturing, and they are among the more prominent materials used in aircraft manufacturing today. However, CFRP is highly prone to delamination and other damage when drilled due to it being extremely strong with a good strength-to-weight ratio and high thermal conductivity. Because of this problem and CFRP’s growing importance in aircraft manufacture, research has focused on the entry and exit holes as indicators of damage occurrence during drilling of screws, rivets, and other types of holes. The inside of the hole was neglected in past research and a proper way to quantify the internal side of a hole by combining the entry and exit hole should be included. To fill this gap and improve the use of CFRP, this paper reports a novel technique to measure the holes by using the extension of the adjusted delamination factor (SFDSR) for drilling thick CFRP composites in order to establish the influence of machining input variables on key output measures, i.e., delamination and other damages. The experimental results showed a significant difference in interpretation of the damage during the analysis. Improvement was made by providing better perspectives of identifying hole defects.
Sharizal Ahmad Sobri; David Whitehead; Mazlan Mohamed; Julie Juliewatty Mohamed; Mohd Hazim Mohamad Amini; Andi Hermawan; Mohd Sukhairi Mat Rasat; Azfi Zaidi Mohammad Sofi; Wan Omar Ali Saifuddin Wan Ismail; Mohd Natashah Norizan. Augmentation of the Delamination Factor in Drilling of Carbon Fibre-Reinforced Polymer Composites (CFRP). Polymers 2020, 12, 2461 .
AMA StyleSharizal Ahmad Sobri, David Whitehead, Mazlan Mohamed, Julie Juliewatty Mohamed, Mohd Hazim Mohamad Amini, Andi Hermawan, Mohd Sukhairi Mat Rasat, Azfi Zaidi Mohammad Sofi, Wan Omar Ali Saifuddin Wan Ismail, Mohd Natashah Norizan. Augmentation of the Delamination Factor in Drilling of Carbon Fibre-Reinforced Polymer Composites (CFRP). Polymers. 2020; 12 (11):2461.
Chicago/Turabian StyleSharizal Ahmad Sobri; David Whitehead; Mazlan Mohamed; Julie Juliewatty Mohamed; Mohd Hazim Mohamad Amini; Andi Hermawan; Mohd Sukhairi Mat Rasat; Azfi Zaidi Mohammad Sofi; Wan Omar Ali Saifuddin Wan Ismail; Mohd Natashah Norizan. 2020. "Augmentation of the Delamination Factor in Drilling of Carbon Fibre-Reinforced Polymer Composites (CFRP)." Polymers 12, no. 11: 2461.
Carbon fibre reinforced polymer (CFRP) composite is becoming popular in supply and demand trend among the industry players especially in aerospace industry. This material can be applied into various applications in the industries due to the features such as strength-to-weight ratio and rigidity, which is suitable for the aircraft with the highest weight ratio or low weight for high-performance automobile racing. This chapter covers comprehensively regarding CFRP and their machinability. The first section explains three major types of composite materials and its features including a brief highlight about the development of composite materials. Next section covers the fundamental of machining characteristics and the tool development, which is focusing on the machining of fibre reinforced polymer composites. Furthermore, this section focuses on drilling aspects because it is the most challenging machining process compared with sawing, planning, turning, milling and other conventional machining process. The third section highlights the development of drilled hole measurement techniques, which focusing on the prominent development of the delamination factor (Fd) ratio. The final part summarizes the outlook of exploiting this composite material in term of machining parameters. This chapter reviews the experimental progress in drilling of CFRP composites, which is intended to help readers to obtain the latest views in order to develop the appropriate machining parameters.
Sharizal Ahmad Sobri; Robert Heinemann; David Whitehead. Carbon Fibre Reinforced Polymer (CFRP) Composites: Machining Aspects and Opportunities for Manufacturing Industries. Composite Materials: Applications in Engineering, Biomedicine and Food Science 2020, 35 -65.
AMA StyleSharizal Ahmad Sobri, Robert Heinemann, David Whitehead. Carbon Fibre Reinforced Polymer (CFRP) Composites: Machining Aspects and Opportunities for Manufacturing Industries. Composite Materials: Applications in Engineering, Biomedicine and Food Science. 2020; ():35-65.
Chicago/Turabian StyleSharizal Ahmad Sobri; Robert Heinemann; David Whitehead. 2020. "Carbon Fibre Reinforced Polymer (CFRP) Composites: Machining Aspects and Opportunities for Manufacturing Industries." Composite Materials: Applications in Engineering, Biomedicine and Food Science , no. : 35-65.
This study was conducted to investigate drying properties of some Malaysia fast-growing species timbers exposed to drying under different temperatures, and evaluated the effects of these drying temperatures on preservative retention and penetration of the dried timbers. Four Malaysian fast-growing species, namely acacia (Acacia mangium), rubberwood (Hevea brasiliensis), sentang (Azadirachta excelsa), and kelempayan (Neolamarckia cadamba) obtained from a local plantation in Kelantan, Malaysia were used in this study. Drying specimens with dimension of 30 × 150 × 500 mm were dried under air-drying condition, a constant temperature of 60, 80, 100, and 120 °C until the moisture content of the specimens reaches an equilibrium moisture content at each drying condition. The drying properties of the specimens were then examined. After drying, stick specimens with a dimension of 20 mm (radial) × 20 mm (tangential) × 110 mm (longitudinal) obtained from the heartwood of the drying specimen were immersed in cupper azole (CuAz) wood preservative solution for 10 minutes under normal atmospheric pressure for rubberwood and kelempayan, and 30 minutes for acacia and sentang. Retention and penetration of the specimens were evaluated. The results confirmed that drying temperature had a significant effect on drying time. Drying under air-drying condition demanding considerable time, particularly drying acacia and sentang under air-drying condition required longer drying time than the other timber species. Drying temperature also had significant effects on preservative retention of all timber species, except kelempayan. The results demonstrated that preservative retention of all timber species tends to increase as drying temperature increased. In addition, high-temperature drying gives a positive effect on preservative penetration. Drying acacia under temperature of 100 °C could maintain a higher percentage of preservative coverage area until a sufficient depth from the penetration surface. This finding suggests that high-temperature drying is more desirable for better preservative retention and penetration of the specimens used in this study.
Andi Hermawan; Hiroki Sakagami; Sharizal Ahmad Sobri; Mohd Hazim Mohamad Amini; Sitti Fatimah Mhd. Ramle; Shaharlina Rasid. The effects of drying temperatures on preservative retention and penetration of some Malaysian fast-growing species timbers. Drying Technology 2020, 1 -10.
AMA StyleAndi Hermawan, Hiroki Sakagami, Sharizal Ahmad Sobri, Mohd Hazim Mohamad Amini, Sitti Fatimah Mhd. Ramle, Shaharlina Rasid. The effects of drying temperatures on preservative retention and penetration of some Malaysian fast-growing species timbers. Drying Technology. 2020; ():1-10.
Chicago/Turabian StyleAndi Hermawan; Hiroki Sakagami; Sharizal Ahmad Sobri; Mohd Hazim Mohamad Amini; Sitti Fatimah Mhd. Ramle; Shaharlina Rasid. 2020. "The effects of drying temperatures on preservative retention and penetration of some Malaysian fast-growing species timbers." Drying Technology , no. : 1-10.
N. H. M. Fauzi; N. A. Shuaib; Z. A. Zailani; A. R. Irfan; Sharizal Ahmad Sobri. Micro drilling of titanium Ti-6Al-4V: Influence of the cutting parameters on tool life. APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019) 2019, 1 .
AMA StyleN. H. M. Fauzi, N. A. Shuaib, Z. A. Zailani, A. R. Irfan, Sharizal Ahmad Sobri. Micro drilling of titanium Ti-6Al-4V: Influence of the cutting parameters on tool life. APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019). 2019; ():1.
Chicago/Turabian StyleN. H. M. Fauzi; N. A. Shuaib; Z. A. Zailani; A. R. Irfan; Sharizal Ahmad Sobri. 2019. "Micro drilling of titanium Ti-6Al-4V: Influence of the cutting parameters on tool life." APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2019) , no. : 1.
Carbon fibre reinforced polymer or CFRP composite is the most sort-after material for aircraft manufacturing today and the hole defects are inevitable in drilling. Experiments were conducted to identify the effect of machining parameters on key output measures, which is not presented so far for drilling thick CFRP. Results showed that delamination and other damages significantly occurred. Feed rate plays a vital role in reducing the damage in mechanical drilling, whereas laser drilling strategy is essential for the penetration of laser beam. The results were useful to explain the relationships between machining parameters related to mechanical/laser drilling and cut quality.
Sharizal Ahmad Sobri; R. Heinemann; D. Whitehead; N. A. Shuaib. Preliminary investigation of drilling thick carbon fibre reinforced polymer composite (CFRP). AIP Conference Proceedings 2018, 2030, 020014 .
AMA StyleSharizal Ahmad Sobri, R. Heinemann, D. Whitehead, N. A. Shuaib. Preliminary investigation of drilling thick carbon fibre reinforced polymer composite (CFRP). AIP Conference Proceedings. 2018; 2030 (1):020014.
Chicago/Turabian StyleSharizal Ahmad Sobri; R. Heinemann; D. Whitehead; N. A. Shuaib. 2018. "Preliminary investigation of drilling thick carbon fibre reinforced polymer composite (CFRP)." AIP Conference Proceedings 2030, no. 1: 020014.
The objective of the study was to evaluate the dimensional stability of experimental particleboard panels made from rubberwood (Hevea brasiliensis) using modified starch as binder. Panels were manufactured using 15% corn starch modified with glutardialdehyde and 13% modified starch with 2% Urea Formaldehyde resin as improvement. The particleboards were tested for their dimensional stability towards moisture. Results found that the 2% replacement of modified starch with urea formaldehyde resin showed a little increased in dimensional stability compared to using glutardialdehyde modified corn starch only as the binder. Therefore, this study indicated that combination of modified corn starch and urea formaldehyde resin can have a potential to be used as an improved binder to produce particleboard panels with accepted properties.
Mohd Hazim Mohamad Amini; Rokiah Hashim; Nurul Syuhada Sulaiman; Mazlan Mohamed; Mohmad Najmi Masri; Sharizal Ahmad Sobri; Nor Izaida Ibrahim. Study on Dimensional Stability of Particleboard Made Using Glutardialdehyde Modified Corn Starch as the Binder at Various Relative Humidity. International Journal of Engineering & Technology 2018, 7, 19 -22.
AMA StyleMohd Hazim Mohamad Amini, Rokiah Hashim, Nurul Syuhada Sulaiman, Mazlan Mohamed, Mohmad Najmi Masri, Sharizal Ahmad Sobri, Nor Izaida Ibrahim. Study on Dimensional Stability of Particleboard Made Using Glutardialdehyde Modified Corn Starch as the Binder at Various Relative Humidity. International Journal of Engineering & Technology. 2018; 7 (2.15):19-22.
Chicago/Turabian StyleMohd Hazim Mohamad Amini; Rokiah Hashim; Nurul Syuhada Sulaiman; Mazlan Mohamed; Mohmad Najmi Masri; Sharizal Ahmad Sobri; Nor Izaida Ibrahim. 2018. "Study on Dimensional Stability of Particleboard Made Using Glutardialdehyde Modified Corn Starch as the Binder at Various Relative Humidity." International Journal of Engineering & Technology 7, no. 2.15: 19-22.
Carbon fiber reinforced polymer or CFRP composites are the epitome of high-performance materials in lightweight design. However, their machinability can be problematic due to non-homogenous and anisotropic material properties. This preliminary assessment emphasizes drilling strategy by using mechanical drilling and laser machining on 25.4 mm thick CFRP, which has not been investigated so far. In mechanical drilling, three drilling strategies were applied with the same parameters in order to assess the feasibility of drilling thick CFRP. The laser machining experiments were conducted to identify the potential of fiber laser machines to cut thick CFRP due to their superior laser beam quality. The results showed that choosing the appropriate drilling strategy in mechanical drilling is essential for reducing damage when drilling thick CFRP. Significant damage occurred in all experiments. The results are useful to define the relationships between machining parameters related to mechanical/laser drilling and hole/cut quality.
Sharizal Ahmad Sobri; Robert Heinemann; David Whitehead; Norshah Afizi Shuaib. Drilling Strategy for Thick Carbon Fiber Reinforced Polymer Composites (CFRP): A Preliminary Assessment. Journal of Engineering and Technological Sciences 2018, 50, 21 .
AMA StyleSharizal Ahmad Sobri, Robert Heinemann, David Whitehead, Norshah Afizi Shuaib. Drilling Strategy for Thick Carbon Fiber Reinforced Polymer Composites (CFRP): A Preliminary Assessment. Journal of Engineering and Technological Sciences. 2018; 50 (1):21.
Chicago/Turabian StyleSharizal Ahmad Sobri; Robert Heinemann; David Whitehead; Norshah Afizi Shuaib. 2018. "Drilling Strategy for Thick Carbon Fiber Reinforced Polymer Composites (CFRP): A Preliminary Assessment." Journal of Engineering and Technological Sciences 50, no. 1: 21.