Quality assurance and quality control for traditional manufacturing and additive manufacturing

This paper discusses the difference between quality assurance and quality control for additive manufacturing (AM) and traditional manufacturing (SM). It has been noted that the complex geometry and internal lattice structure of AM parts create problems with mechanical suitability. Multifaceted quality requirements and standards complicate the development of quality assurance strategies. Defects in AM parts (porosity, cracks, inclusions, voids, lumpiness and surface roughness) can adversely affect mechanical properties, and some problems such as volume mismatch, layer removal and unwanted internal surface finish cannot be detected by typical mechanical tests . It is also stated that SM continues to dominate AM in terms of quality, accuracy and reliability. The manufacturing industry and investors are always looking to improve technology to reduce costs, energy and expand their capabilities. Beginning in the 1960s, additive manufacturing has since then developed rapidly and continuously, discovering new methods to expand manufacturing capabilities and reinvent the bicycle.