Owing to its light weight and corrosive resistant, Titanium (Ti-6Al-4V) alloy is mainly utilized in fabricating medical device applications. Since it has high strength, it is very difficult to machine alloy using conventional machining. In the present study, an endeavor has been made to machine titanium alloy using AWJM process. Since the process involves with less heat affect zone and higher material removal, it is possible to enhance machinability of workpiece. It has attempted to find the influence of process parameters on surface roughness and topography for enhancing the process. It has been observed that the abrasive flow rate and standoff distance has the most significant role on determining surface quality

Graveness of Guarding is an essential component of any system or organization in an increasingly hacking environment. Layers of protection are necessary. This paper presents a model to develop a multilevel security system. To reach or access inner most circle, three stages of security system endorsement will be necessary, making it the primary level of security. These include the Hex Keypad, Bluetooth & RFID. The valuables in the inner vault are further secured with a secondary system completely separate from the primary, consisting of a Fingerprint Scanner. Any security breach detected will alert the authorities with the help of a GSM Shield, therefore taking the necessary response immediately. Continuous surveillance with online streaming is also demonstrated using Raspberry Pi and a Digital Camera, further safeguarding the valuables.

Laser beam machining has a significant advantage over hand cutting of leather in terms of output rate and efficiency. The pulsed mode diode laser was chosen for leather cutting in this investigation owing to its controlled optical power and less power consumption while the continuous mode lasers are uncontrollable. There is no technique available in the field of adaptive control approach for Stand-off Distance (SOD) in diode laser leather cutting application. Hence an attempt has been made to investigate the effectiveness of SOD on leather surface carbonization using power diode-based laser beam machining approach. Chrome tanned goat leather was taken as workpiece due to its widespread application in the manufacture of footwear, apparel, and wallets. An adaptive controller has been developed using ultrasonic sensor which sets the standoff distance accordingly from the workpiece surface to the laser diode, which reduces the overall time consumption for manual setting of standoff distance and enhances the machining process. This study reports the carbonization values during leather cutting under the adaptive control of standoff distance.

The leather materials are used in a multitude of sectors, including footwear, apparel, handicrafts, and the automotive industry. Due to the radiant heat generated by a laser beam, the laser cutting of leather results in a carbonized cut edge. There is currently no technology available for measuring the carbonization along the contour edges of leather. The purpose of this experimental investigation was to determine the impact of power diode-based laser cutting on the carbonization of machined buffalo leather with the help of a digital microscope to improve the machining process. The ATR-FTIR spectrum was used to analyze the carbon-related functional group in the mid-IR spectrum of carbonized leather samples. It was found that the proposed method can measure the amount of carbon deposition in the cutting zone. The lower amplitude duty cycle with higher feed rate can reduce carbon formation owing to the lower thermal energy distribution. The amplitude (4.5 V), duty cycle (70%) and feed rate (90 mm/s) can produce optimal performance measures.