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International Journal of Energetic Materials and Chemical Propulsion

年間 6 号発行

ISSN 印刷: 2150-766X

ISSN オンライン: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

THERMOMECHANICAL ASPECTS OF ENERGETIC CRYSTAL COMBUSTION

巻 4, 発行 1-6, 1997, pp. 313-336
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v4.i1-6.330
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要約

The lower thermal conductivity, larger elastic compliance, and greater brittleness of a typical energetic crystal contribute to the importance of thermomechanical influences on combustion and initiation of explosion behavior. For example, recent laser-induced localized heating experiments conducted on RDX and AP crystal surfaces have revealed networks of microscopic cracks in association with the initiation of chemical decomposition. The crystallographically-determined ultrafine crack networks (that have been traced in AP to the orthorhombic to rocksalt structure-type phase transformation as well) are associated, in turn, with the greater hardnesses of energetic crystals. The coupled hardness and brittleness properties are attributed to the difficulty of initiating viscoplastic flow by dislocation movement, as illustrated on a hardness stress-strain basis. In this respect, recent results obtained here that show comparable hardnesses of ADN and RDX crystals are in agreement with a report of comparable drop-weight impact sensitivities. A dislocation pile-up avalanche explanation of such drop-weight impact sensitivity measurements is related to model calculations of thermally induced explosive decompositions. The dependence of impact sensitivity on crystal size is of special interest because of the possibility of relation to crystal size effects that are reported for the pressure dependencies of burning rates.

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