Reliability Factors Analysis of MEMS Safety and Arming System

Hui, Zhang; Wang, Ying; Lou, Wenzhong; Liu, Fang Yi; Wang, Fu Fu

doi:10.4028/www.scientific.net/kem.609-610.1494

Cited by 2 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, with the development of intelligent ammunition technology, modern fuzes have been endowed with more functions, such as flight control, explosion point control, trajectory correction, target recognition, and positioning, in addition to state control and initiation control. However, the volume limitations of traditional fuzes restrict the expansion of these functions, and this fuze-development problem has been effectively solved by the emergence of MEMS fuzes [1][2][3][4][5]. A setback arming device is the core device in a MEMS fuze and is used to ensure service process safety and launch reliability [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Test and Improvement of a Fuze MEMS Setback Arming Device Based on the EDM Process

et al. 2022

View full text Add to dashboard Cite

This paper introduces the working principle of a MEMS safety and arming (S&A) device for a fuze that is installed perpendicular to the axis of the projectile. Additionally, the application of low-speed wire electrical discharge machining (EDM) in the fabrication of the device is proposed. Microsprings are susceptible to flexural deformation and secondary deformation in the EDM process, a problem that is solved by designing the auxiliary support beam, using multiple cuts, destress annealing and optimizing the processing parameters. The difficult problem of setback slider deformation in the principle prototype test is properly solved by establishing V-shaped grooves at both ends of the setback slider. The connection mode between the microspring and the frame is changed to a clearance fit connection. The improved setback arming device can guarantee service process safety and launch reliability. The maximum overload that can be withstood in service processing is 20,000 g, and the minimum overload for safety release during launch is 12,000 g. The results show that the EDM process can greatly reduce the machining cost while improving the machining precision and machining speed, which can compensate for the defects of the current manufacturing technology.

show abstract

Section: Introductionmentioning

confidence: 99%

Test and Improvement of a Fuze MEMS Setback Arming Device Based on the EDM Process

et al. 2022

View full text Add to dashboard Cite

show abstract

Optimization of a Fuze MEMS Setback Arming Device Based on the EDM Process

2020

View full text Add to dashboard Cite

This paper introduces the working principle of a MEMS safety and arming (S&A) device and measures and tests a setback arming device. To solve the problem of large fabrication errors in the UV-LIGA process, a MEMS S&A fuze device fabricated by low-speed wire electrical discharge machining (EDM) is proposed. Microsprings are susceptible to flexural deformation and secondary deformation in the EDM process, which is solved by setting the auxiliary support beam, using multiple cuts and destress annealing. The linewidth, thickness and elastic coefficient of the microspring fabricated using the EDM process are closer to the designed values than those fabricated using the UV-LIGA process under the same conditions. When comparing the MEMS S&A devices fabricated by the two processes, it is found that the EDM process has a the higher machining accuracy. In view of the plastic deformation of the upper end of the microspring, the structure of the microspring is optimized to incorporate a gradient linewidth, and the optimized setback arming device is tested. The results show that the device can ensure service process safety and launch reliability. The maximum overload that can be withstood in service processing is 17000 g, and the minimum overload for insurance release during launch is 1500 g. INDEX TERMSFuze, MEMS safety and arming device, UV-LIGA process, EDM process, microspring.

show abstract

Reliability Factors Analysis of MEMS Safety and Arming System

Cited by 2 publications

References 2 publications

Test and Improvement of a Fuze MEMS Setback Arming Device Based on the EDM Process

Test and Improvement of a Fuze MEMS Setback Arming Device Based on the EDM Process

Optimization of a Fuze MEMS Setback Arming Device Based on the EDM Process

Contact Info

Product

Resources

About