PBX材料宏细观断裂行为的数字散斑相关法实验研究

周忠彬; 陈鹏万; 黄风雷

doi:10.11858/gywlxb.2011.01.001

PBX材料宏细观断裂行为的数字散斑相关法实验研究

doi: 10.11858/gywlxb.2011.01.001

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

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通讯作者:
陈鹏万

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出版历程
- 收稿日期: 2009-11-16
- 修回日期: 2010-01-26
- 刊出日期: 2011-02-15

An Experimental Study on the Micro/Macro Fracture Behavior of PBX Using Digital Speckle Correlation Method

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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Corresponding author: CHEN Peng-Wan

摘要

摘要: 采用半圆盘弯曲实验和数字散斑相关方法，对高聚物粘结炸药（PBX）的宏、细观断裂行为进行了实验研究。宏观上，带有预制裂纹的半圆盘试样发生拉伸破坏，利用数字散斑相关技术得到了试样的应变场和位移矢量场分布，定量分析了试样全场的变形特征，并测得了PBX材料的平面应变断裂韧性；细观上，用配有加载装置的扫描电子显微镜对含预制裂纹的半圆盘试样间接拉伸下的损伤演化和破坏过程进行了实时原位观察，借助于数字散斑相关方法，定量分析了试样损伤局部化特征。结果表明，将数字散斑相关方法用于研究PBX材料宏、细观尺度上的变形破坏问题是有效的。
- 高聚物粘结炸药（PBX） /
- 数字散斑相关方法 /
- 半圆盘弯曲实验 /
- 断裂韧性 /
- 损伤局部化
Abstract: The micro/macro fracture behavior of a polymer bonded explosive (PBX) material was experimentally studied using a semi-circular bend test and digital speckle correlation method (DSCM). Brittle fracture occurred when a semi-circular disc sample of PBX with a preset crack was compressed. The whole strain field and displacement vector plot were obtained using the DSCM, and the plane strain fracture toughness of PBX material was acquired. In addition, real time microscopic examination was conducted to observe the process of deformation and failure of PBX material under semi-circular bend test using a scanning electron microscope (SEM) equipped with a loading stage. The localized damage and its evolution in PBX were obtained by the DSCM, demonstrating possible fracture route of microcracks. The results indicate that DSCM technique is a valid and effective tool to study the deformation and fracture mechanisms of PBX.
- polymer bonded explosive (PBX) /
- digital speckle correlation method /
- semi-circular bend test /
- fracture toughness /
- localization of damage

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参考文献(22)

Wang H W, Kang Y L, Xie H P. Advance in Digital Speckle Correlation Method and Its Application [J]. Advances in Mechanics, 2005, 35(2): 195-203. (in Chinese)

王怀文, 亢一澜, 谢和平. 数字散斑相关方法与应用研究进展 [J]. 力学进展, 2005, 35(2): 195-203.

Xie H M, Shi H, Chen P W, et al. An Experimental Study on Creep Behavior of PBX Using Moir Interferometry [J]. Journal of Experimental Mechanics, 2005, 20(3): 375-380. (in Chinese)

谢惠民, 史航, 陈鹏万, 等. PBX材料蠕变性能的云纹干涉法实验研究 [J]. 实验力学, 2005, 20(3): 375-380.

Liu Z W, Xie H M, Li K X, et al. Fracture Behavior of PBX Simulant Subject to Combined Thermal and Mechanical Loads [J]. Polymer Testing, 2009, 28: 627-635.

Chen P W, Xie H M, Huang F L, et al. Deformation and Failure of Polymer Bonded Explosives under Diametric Compression Test [J]. Polymer Testing, 2006, 25: 333-341.

Li M, Zhang Y, Li J M, et al. Experimental Investigation to the Damage Localization of PBX Mechanical Failure at Mesoscale [J]. Energetic Materials, 2005, 13(2): 79-83. (in Chinese)

李明, 张钰, 李敬明, 等. 高聚物粘结炸药压缩破坏的细观力学实验研究 [J]. 含能材料, 2005, 13(2): 79-83.

Chong K P, Kuruppu M D. New Specimen for Fracture Toughness Determination for Rock and Other Materials [J]. Int J Fract, 1984, 26: 59-62.

Chong K P, Kuruppu M D. Fracture Toughness Determination of Layered Materials [J]. Eng Fract Mech, 1987, 28(1): 43-54.

Chang S H, Lee C I, Jeon S. Measurement of Rock Fracture Toughness under Model Ⅰ and Ⅱ and Mixed Mode Conditions by Using Disc-Type Specimens [J]. Eng Geology, 2002, 66: 79-97.

Li M, Zhang Y, Wen M P, et al. Digital Speckle Correlation and Its Applications [J]. Information and Electronic Engineering, 2005, 3(1): 36-39. (in Chinese)

李明, 张钰, 温茂萍, 等. 数字散斑相关技术及其应用 [J]. 信息与电子工程, 2005, 3(1): 36-39.

Pan B, Xie H M, Xu B Q, et al. Development of Sub-Pixel Displacements Registration Algorithms in Digital Image Correlation [J]. Advances in Mechanics, 2005, 35(3): 345-352. (in Chinese)

潘兵, 谢惠民, 续伯钦, 等. 数字图像相关中的亚像素位移定位算法进展 [J]. 力学进展, 2005, 35(3): 345-352.

Pan B, Xie H M, Guo ZQ, et al. Full-Field Strain Measurement Using a Two-Dimensional Savitzky-Golay Digital Differentiator in Digital Image Correlation [J]. Optical Eng, 2007, 46(3): 1-10.

Zhao F F. Study on Damage and Fracture Mechanism of PBX by Acoustic Emission [D]. Mianyang: China Academy of Engineering Physics, 2001: 31-36. (in Chinese)

赵方芳. 利用声发射技术研究高聚物粘结炸药的损伤与断裂特性 [D]. 绵阳: 中国工程物理研究院, 2001: 31-36.

Wen M P, Ma L L, Tian Y, et al. Experimental Study on the Plane Strain in Fracture Toughness of High Polymer Bonded Explosive [J]. Chinese Journal of Explosive and Propellants, 2001, 2: 16-19. (in Chinese)

温茂萍, 马丽莲, 田勇, 等. 高聚物粘结炸药平面应变断裂韧度实验研究 [J]. 火炸药学报, 2001, 2: 16-19.

Li C, Tie Y, Zheng Y P. Influence of Material Characters on Biomaterial Interfacial Crack Energy Release Rates and Stress Intensity Factors [J]. Chinese Journal of Mechanical Engineering, 2009, 45(3): 1-6. (in Chinese)

李成, 铁瑛, 郑艳萍. 两种材料的性质对双材料界面裂纹能量释放率及应力强度因子的影响 [J]. 机械工程学报, 2009, 45(3): 1-6.

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