Skip to Main content Skip to Navigation
Journal articles

PVDF Based Pressure Sensor for the Characterisation of the Mechanical Loading during High Explosive Hydro Forming of Metal Plates

Abstract : High explosive hydro forming (HEHF) is a suitable technique for large metal plate forming. Manufacturing stages of such a part requires an adapted design of explosive charge configurations to define the mechanical loading exerted on the part. This mechanical loading remains challenging to be experimentally determined but necessary for predictive numerical simulation in the design of parts to form. Providing that the actual mechanical impulse would allow the neglecting of the modelling of the detonation stage, this considerably increases the computational time. The present work proposes an experimental method for obtaining the exerted mechanical loading by HEHF on the part to form. It relies on the development of low-cost sensor based on a polyvinyliden fluorid (PVDF) gauge. In addition to it, an analytical approach based on shock physics is proposed for the sensor signal interpretation. The method considers the multi-layer aspect of the sensor and its intrusiveness with respect to waves propagation. Measurements were repeated to assess their relevance and the reproducibility by using steel and aluminium anvils in HEHF. Numerical modelling in 2D plane geometry of the experiments was performed with two commercial hydrocodes. The comparison of mechanical impulses shows an agreement in terms of chronology but a noticeable difference in terms of amplitude, explained by mesh size and numerical diffusion.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03295430
Contributor : Michel Arrigoni Connect in order to contact the contributor
Submitted on : Thursday, July 22, 2021 - 9:49:54 AM
Last modification on : Monday, October 11, 2021 - 2:23:58 PM

Links full text

Identifiers

Citation

Jérémie Tartière, Michel Arrigoni, Alain Nême, Hugo Groeneveld, Sjoerd van der Veen. PVDF Based Pressure Sensor for the Characterisation of the Mechanical Loading during High Explosive Hydro Forming of Metal Plates. Sensors, MDPI, 2021, 21 (13), pp.4429. ⟨10.3390/s21134429⟩. ⟨hal-03295430⟩

Share

Metrics

Record views

29