Abstract
Recently, natural fiber-reinforced polymers (NFRPs) have become important materials in many engineering applications; thus, to employ these materials some final industrial processes are needed, such as cutting, trimming, and drilling. Because of the heterogeneous nature of NFRPs, which differs from homogeneous materials such as metals and polymers, several defects have emerged when processing the NFRPs through traditional cutting methods such as high surface roughness and material damage at cutting zone. In order to overcome these challenges, unconventional cutting methods were considered. Unconventional cutting methods did not take into account the effects of cutting forces, which are the main cause of cutting defects in traditional cutting processes. The most prominent unconventional cutting processes are abrasive waterjet (AWJM) and laser beam (LBM) cutting technologies, which are actually applied for cutting various NFRPs. In this study, previously significant studies on cutting NFRPs by AWJM and LBM are discussed. The surface roughness, kerf taper, and heat-affected zone (HAZ) represent the target output parameters that are influenced and controlled by the input parameters of each process. However, this topic requires further studies on widening the range of material thickness and input parameter values.
Highlights
For environmental and economic reasons, the production of materials is becoming more sophisticated, more widespread, and more dependent on natural resources [1,2,3,4,5]
Delamination is almost non-existent in both unconventional cutting methods, so these methods are the most suitable for cutting composite materials and they have an acceptable range of surface roughness that can be greatly improved if appropriate operating parameters are taken
Another important point that can be gathered from the survey is that there are limited studies conducted on natural fiber-reinforced polymers cut by non-traditional methods especially by laser beam technology
Summary
For environmental and economic reasons, the production of materials is becoming more sophisticated, more widespread, and more dependent on natural resources [1,2,3,4,5]. Polymers 2020, 12, 1332the product quality [7] This has resulted in fundamental questions such as of 17 parameters control the following: which cutting processes are the most suitable for cutting NFRPs? NFRP composites and which operating parameters are optimal for each process It is laser beam machining (LBM), ultrasonic drilling [11], and abrasive water jet machining (AWJM) worth mentioning that the methods main priority of this study to cover. FRPs have for many similar properties because are on determining which cutting methods are more suitable cutting composites and they which operating parameters are optimal process. It is of worth theFRPs, main priority of made from the same polymers usedfor in each the manufacture bothmentioning.
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