Dynamic Piezoresistive Coefficient of Manganin to 392 kbar

Lyle, J. W.; Schriever, R.; McMillan, A. R.

doi:10.1063/1.1657251

Cited by 24 publications

(1 citation statement)

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“…The change in resistance of the manganin wire has been measured as a function of peak shock-wave pressure up to 19 GPa. Lyle [ 13 ] presented a transducer that was made of manganin wire 0.025 mm in diameter and 7 mm long, with an electrical resistance of about 7 Ω. He reported the results of an investigation of the dynamic piezoresistive coefficient in the range of pressure from 7.7 GPa to 39.2 GPa.…”

Section: Introductionmentioning

confidence: 99%

A Manganin Thin Film Ultra-High Pressure Sensor for Microscale Detonation Pressure Measurement

Zhang

Zhao

et al. 2018

Sensors

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With the development of energetic materials (EMs) and microelectromechanical systems (MEMS) initiating explosive devices, the measurement of detonation pressure generated by EMs in the microscale has become a pressing need. This paper develops a manganin thin film ultra-high pressure sensor based on MEMS technology for measuring the output pressure from micro-detonator. A reliable coefficient is proposed for designing the sensor’s sensitive element better. The sensor employs sandwich structure: the substrate uses a 0.5 mm thick alumina ceramic, the manganin sensitive element with a size of 0.2 mm × 0.1 mm × 2 μm and copper electrodes of 2 μm thick are sputtered sequentially on the substrate, and a 25 μm thick insulating layer of polyimide is wrapped on the sensitive element. The static test shows that the piezoresistive coefficient of manganin thin film is 0.0125 GPa−1. The dynamic experiment indicates that the detonation pressure of micro-detonator is 12.66 GPa, and the response time of the sensor is 37 ns. In a word, the sensor developed in this study is suitable for measuring ultra-high pressure in microscale and has a shorter response time than that of foil-like manganin gauges. Simultaneously, this study could be beneficial to research on ultra-high-pressure sensors with smaller size.

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Section: Introductionmentioning

confidence: 99%