Model for ratchet growth in PBX 9502

R. B. Schwarz

doi:10.1016/j.actamat.2019.08.050

Model for ratchet growth in PBX 9502

R. B. Schwarz

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We developed a statistical model for RG. The model attributes RG to the formation of intergranular cracks caused by tessellated internal stresses that develop during the thermal excursions. It is postulated that different sets of internal cracks form upon heating and cooling the polycrystalline solid. The model reproduces RG measurements in pressed TATB and PBX 9502 energetic materials and suggests an explanation for why the amplitude of RG generated by a heating excursion is larger than that generated by a subsequent cooling excursion of the same amplitude.

Original language	English
Pages (from-to)	170-179
Number of pages	10
Journal	Acta Materialia
Volume	180
DOIs	https://doi.org/10.1016/j.actamat.2019.08.050
State	Published - Nov 1 2019

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title = "Model for ratchet growth in PBX 9502",

abstract = "We developed a statistical model for RG. The model attributes RG to the formation of intergranular cracks caused by tessellated internal stresses that develop during the thermal excursions. It is postulated that different sets of internal cracks form upon heating and cooling the polycrystalline solid. The model reproduces RG measurements in pressed TATB and PBX 9502 energetic materials and suggests an explanation for why the amplitude of RG generated by a heating excursion is larger than that generated by a subsequent cooling excursion of the same amplitude.",

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AU - Schwarz, R. B.

PY - 2019/11/1

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N2 - We developed a statistical model for RG. The model attributes RG to the formation of intergranular cracks caused by tessellated internal stresses that develop during the thermal excursions. It is postulated that different sets of internal cracks form upon heating and cooling the polycrystalline solid. The model reproduces RG measurements in pressed TATB and PBX 9502 energetic materials and suggests an explanation for why the amplitude of RG generated by a heating excursion is larger than that generated by a subsequent cooling excursion of the same amplitude.

AB - We developed a statistical model for RG. The model attributes RG to the formation of intergranular cracks caused by tessellated internal stresses that develop during the thermal excursions. It is postulated that different sets of internal cracks form upon heating and cooling the polycrystalline solid. The model reproduces RG measurements in pressed TATB and PBX 9502 energetic materials and suggests an explanation for why the amplitude of RG generated by a heating excursion is larger than that generated by a subsequent cooling excursion of the same amplitude.

UR - https://www.scopus.com/pages/publications/85072226812

U2 - 10.1016/j.actamat.2019.08.050

DO - 10.1016/j.actamat.2019.08.050

M3 - Article

SN - 1359-6454

VL - 180

SP - 170

EP - 179

JO - Acta Materialia

JF - Acta Materialia

ER -

Model for ratchet growth in PBX 9502

Abstract

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