A Node Detection Method Based on Johnson-Cook and Thin-Film IMD Characteristic Model Armor Damage Detection Repair and Subsequent Optimization

Hanjui Chang; Guangyi Zhang; Yue Sun; Shuzhou Lu

doi:10.3390/polym14214540

A Node Detection Method Based on Johnson-Cook and Thin-Film IMD Characteristic Model Armor Damage Detection Repair and Subsequent Optimization

Polymers (Basel). 2022 Oct 26;14(21):4540. doi: 10.3390/polym14214540.

Authors

Hanjui Chang^{1

2}, Guangyi Zhang^{1

2}, Yue Sun^{1

2}, Shuzhou Lu^{1

2}

Affiliations

¹ Department of Mechanical Engineering, College of Engineering, Shantou University, Shantou 515063, China.
² Intelligent Manufacturing Key Laboratory of Ministry of Education, Shantou University, Shantou 515063, China.

Abstract

In this paper, a node detection method is proposed for the detection of battle damage to armor. This experiment uses the special nature of the film to virtualize the surface of the armor IMD film coverage. The die index is a large area and is easy to damage, but with the use of a unique IMD film stamping die, the possibility of damage decreases, which provides a damage prediction function for the armor. In addition, for the damaged armor, the same method can be used to detect because the damaged part more easily causes the surface film to rupture after being impacted, so it is possible to optimize the design of the armor and the molding through the die index. The die index can also detect the degree of damage to the damaged part of the damaged armor. Therefore, the IMD die index is introduced to quantify the data, and the degree of damage is judged by the IMD die index. The novelty of this work is that each node can efficiently detect the vulnerable damage position of the armor using the die index and then pass through the COMSOL. The Johnson-Cook stress model simulates the battle loss, obtains the stress deformation that occurs after the battle loss, and verifies the experiment by comparing the results obtained. Finally, the repair method is used to repair all the predicted battle damage parts based on additive manufacturing to ensure that they can be used again after repair.

Keywords: armor node; detection accurate repairs; detection of battle damage; position prediction.

Grants and funding

This research was funded by the Guangdong Province Science and Technology Special Fund Project—Major Science and Technology Special Project (2019ST102), and technical support was provided by Yizumi Precision Machinery Co., Ltd., which are gratefully acknowledged.