Additionally, this review discussed the limitations of 3D printing processes, which may assist future researchers in increasing the utility of their works and overcoming the shortcomings of previous works. This review article discusses the various 3D printing techniques used in the manufacture of polymer composites, the various types of reinforced polymer composites (fibers, nanomaterials, and particles reinforcements), the characterization of 3D printed parts, and their applications in a various industries. Each year, numerous research papers are published on the subject of imbuing composites with various capabilities such as magnetic, sensing, thermal, embedded circuitry, self-healing, and conductive qualities by the use of innovative materials and printing technologies. The advantages of 3D printing with multipurpose materials enable solutions in challenging locations such as outer space and extreme weather conditions where human involvement is not possible. The 3D printing techniques are employed for the manufacturing of advanced multifunctional polymer composites due to their mass customization, freedom of design, capability to print complex 3D structures, and rapid prototyping. However, technological breakthroughs, particularly in the field of material science, continue to be the focus of research, particularly in terms of future advancements. This technology has gained global recognition and garnered considerable attention in recent years. A technical database with industrial value was established for optical measurements of metal components with different surface properties without matte coatings, which can serve as an alternative to the conventional 3D optical measurement.ģD printing is a constantly expanding technology that represents one of the most exciting and disruptive production possibilities available today. It was found that the research result has practical value in the precision machining industry because average size errors of the four measurement objects with different surface properties can be controlled at about 3 µm, 0.1 µm, 0.5 µm, and 9 µm. The differences in the optical measurement results between with and without matte coatings were investigated and analyzed. This work dealt with the possibility of measuring four metal components that were not sprayed with anything. This method can perform precise optical measurement without matte coatings. In this study, a state-of-the-art green technique for three-dimensional (3D) optical measurements without environmental pollution is demonstrated, which is an environmentally friendly optical measurement method. In practical engineering, the green measurement approach indeed plays an important role in the industry currently. In the industry, measuring devices play a crucial role in the field of quality assurance.
Nowadays, the optical measuring approach is widely used in the precision machining industry due to high measurement efficiency.