Precision manufacturing requirements are the key to ensuring the quality and reliability of biomedical implants. The powder bed fusion (PBF) technique offers a promising solution, enabling the creation of complex, patient-specific implants with a high degree of precision. This technology is revolutionizing the biomedical industry, paving the way for a new era of personalized medicine. This review explores and details powder bed fusion 3D printing and its application in the biomedical field. It begins with an introduction to the powder bed fusion 3D-printing technology and its various classifications. Later, it analyzes the numerous fields in which powder bed fusion 3D printing has been successfully deployed where precision components are required, including the fabrication of personalized implants and scaffolds for tissue engineering. This review also discusses the potential advantages and limitations for using the powder bed fusion 3D-printing technology in terms of precision, customization, and cost effectiveness. In addition, it highlights the current challenges and prospects of the powder bed fusion 3D-printing technology. This work offers valuable insights for researchers engaged in the field, aiming to contribute to the advancement of the powder bed fusion 3D-printing technology in the context of precision manufacturing for biomedical applications.

This research explores the use of Double Arrowhead (DAH) structures, known for their light weight, high compressive stiffness, and energy absorption. A novel truss-supported DAH structure with a circular node was investigated under compression loads. Samples were fabricated using FDM additive manufacturing with both reinforced and non-reinforced PLA filaments. The truss supported DAH structure with a circular node, made from Carbon Fiber reinforced PLA, demonstrated superior performance with a compression strength of 19.3780 MPa, a strength to weight ratio of 0.3561 MPa/g, and a total specific energy absorption of 13903.3367 J/kg.

Additive manufacturing has transformed the production of complex and tailored components in multiple industries, including aerospace, automotive, biomedical, and consumer products. Nonetheless, maintaining the quality and reliability of these components presents a significant challenge. This review paper examines the progress made in quality control methodologies specifically designed for additive manufacturing processes. Conventional quality assurance techniques, including dimensional measurement, visual assessment, and mechanical evaluations (such as tensile, compression, and impact testing), are essential for determining the quality of the final component. Nonetheless, these techniques might not adequately identify internal flaws. This review analyzes the increasing importance of non-destructive testing (NDT) methods, including ultrasonic testing, computed tomography (CT), and infrared thermography, in detecting internal defects such as porosity, cracks, and lack of fusion. The document examines the foundational principles of these NDT techniques, evaluates their benefits and drawbacks within the framework of additive manufacturing, and underscores the latest developments in their utilization. Additionally, the analysis highlights the critical role of in-process monitoring and real-time quality assurance techniques. These methods focus on identifying and rectifying flaws during the printing process, thereby reducing the likelihood of generating defective components. This detailed analysis offers an in-depth examination of the present advancements in additive manufacturing quality control, emphasizing the essential contributions of both conventional and innovative methods. By analyzing the strengths and limitations of these methods, researchers and industry professionals can create more robust and effective quality control strategies, ultimately resulting in the production of high-quality and reliable AM components.

Biomimetic structures draw their inspiration from nature. Biomimetic structures aim to improve strength, flexibility, and energy efficiency. Safety equipment, aircraft, automotive, and medical equipment incorporate biomimetic structures. In recent days, biomimetic structures were modified by researchers to enhance their mechanical properties. In this study, novel double arrowhead structures were manufactured using material extrusion technology, and the quasi-static compression tests were carried out in the Universal Testing Machine. Finally, the results demonstrated that the highest compressive strength is 13.29 MPa recorded on a modified novel solid square double arrowhead structure. Once more, the solid square double arrowhead structure has more specific strength than every other structure. A greater specific strength indicates that a structure is capable of withstanding greater forces while minimising its weight. In order to provide direction for the practical applications of lightweight materials, this research compares the truss double arrowhead structures with the solid double arrow head structures.