Calibration Experiments of a Thin Manganin Gauge for Shock-Wave Measurement in Solids: Measurements of Shock-Stress History in Alumina

• Nakamura Akira

  High Energy Rate Laboratory, Faculty of Engineering, Kumamoto University

• Mashimo Tsutomu

  High Energy Rate Laboratory, Faculty of Engineering, Kumamoto University

抄録

A thin-type manganin piezoresistance gauge was calibrated for the highly time-resolved measurements of the stress histories under shock compression of solids in the several 10 s of GPa region. The final total gauge thickness can be reduced to 25–30 μm to improve time resolution. The calibration experiments were performed using alumina stress medium by means of the inclined-mirror method using a new high-speed streak camera combined with a powder gun. The stress histories in alumina polycrystal were measured, in which the elastoplastic transitions were detected at rise and release. The relationship between the resistance change and shock stress was closely described as ΔR⁄R₀=−0.0329+0.0276σ_x (R₀: zero pressure resistance, ΔR: resistance change, and σ_x: peak shock stress). It was confirmed that the present modified gauge was applicable in the pressure range up to over 40 GPa.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 32 (10), 4785-4790, 1993

  社団法人応用物理学会

キーワード

• manganin gauge
• piezoresistance
• high pressure
• shock compression
• stress history
• alumina
• Hugoniot measurement
• inclined-mirror method
• powder gun
• elastoplastic transition

詳細情報

• CRID: 1573668927168176768
• NII論文ID: 110003899865
• NII書誌ID: AA10457675
• 本文言語コード: en
• データソース種別:
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