Comparative study of the fracture toughness determination of a polymer-bonded explosive simulant

Zhou, Zhongbin; Chen, Pengwan; Duan, Zhuo-Ping; Huang, Fenglei

doi:10.1016/j.engfracmech.2011.08.017

Cited by 18 publications

(15 citation statements)

References 10 publications

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“…As an alternative method, some optical non‐contact techniques can provide full‐field deformation information. Among the optical techniques, the digital image correlation (DIC) method is one of the most powerful optical full‐field measurement methods and has been applied in various fields in the past decades []. By measuring the strain with both the laser gap gauge technique and high‐speed DIC method, Chen et al .…”

Section: Introductionmentioning

confidence: 99%

Dynamic Brazilian Test of Brittle Materials Using the Split Hopkinson Pressure Bar and Digital Image Correlation

Chen

Guo

Liu

et al. 2014

Strain

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In this paper, the dynamic tensile properties of brittle materials were studied by using the dynamic Brazilian tests. Combined with a high‐speed photographic system, a split Hopkinson pressure bar (SHPB) was used to conduct dynamic Brazilian tests on three brittle materials: Al2O3 ceramic, granite and poly(methyl methacrylate). Based on the images recorded by a high‐speed camera, the displacement and strain fields were obtained by the digital image correlation method. The dynamic deformation and failure of the brittle materials were analysed. The rate‐related dynamic tensile strength of the three brittle materials was also determined and analysed. The results show that the dynamic Brazilian test is an effective method to study the dynamic tensile properties of brittle materials.

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Section: Introductionmentioning

confidence: 99%

Dynamic Brazilian Test of Brittle Materials Using the Split Hopkinson Pressure Bar and Digital Image Correlation

Chen

Guo

Liu

et al. 2014

Strain

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“…FBD and SCB tests can be used to measure the plane strain fracture toughness of brittle materials [15]. An advantage of FBD test is that it does not require a pre-notch.…”

Section: Methodsmentioning

confidence: 99%

“…The impact a e-mail: pwchen@bit.edu.cn tensile experiments are conducted by means of SHPB. Three experimental methods (including Brazilian disc test, flattened Brazilian disc test and semi-circular bending test [15]) were carried out in SHPB. Because the brittle materials are of low strength and low wave impendence, application of the conventional SHPB test to measure the loading forces presents challenges, therefore, a quartz crystal transducer was embedded in the transmitted bar to measure the low amplitude loading forces.…”

Section: Introductionmentioning

confidence: 99%

Dynamic tensile deformation and fracture of a highly particle-filled composite using SHPB and high-speed DIC method

Zhou

Chen

Guo

et al. 2012

EPJ Web of Conferences

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Abstract. In this work, various tensile tests, including Brazilian disc test (BDT), flattened Brazilian disc (FBD) test and semicircular bending (SCB) test, were carried out on a highly particle-filled composite by using a split Hopkinson pressure bar (SHPB). With the consideration of low strength and low wave impedance of the materials, a quartz crystal transducer was embedded in SHPB to measure the loading forces. A high-speed camera was used to capture the deformation and fracture process of materials. Digital image correlation (DIC) method was used to process these digital images to obtain the dynamic deformation information. Based on the measured strain fields, the crack growth path was determined and the failure mechanism of samples was analyzed. Combining SHPB and DIC method, the indirect tensile stress strain plots of disc samples were obtained, and the dynamic fracture toughness of materials was measured using both FBD and SCB tests. The results show that the tensile failure strength and fracture toughness increases with the increase of strain rates, exhibiting strain rate dependence. The high-speed DIC method combined with SHPB is effective to study the dynamic tensile behaviour of brittle materials with low strengths.

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“…Optical and electronic microscopic examinations have been used to evaluate the damage and microstructures of PBX [ 5 ]. These methods can observe the initial spatial damage distribution of the whole specimen.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Acoustic Nonlinear Behavior in Granular Polymer Bonded Explosives with Progressive Fatigue Damage

Zhang

Tian

et al. 2017

Materials

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The measurement of acoustic nonlinear response is known as a promising technique to characterize material micro-damages. In this paper, nonlinear ultrasonic approach is used to characterize the evolution of fatigue induced micro-cracks in polymer bonded explosives. The variations of acoustic nonlinearity with respect to fatigue cycles in the specimens are obtained in this investigation. The present results show a significant increase of acoustic nonlinearity with respect to fatigue cycles. The experimental observation of the correlation between the acoustic nonlinearity and fatigue cycles in carbon/epoxy laminates, verifies that an acoustic nonlinear response can be used to evaluate the progressive fatigue damage in the granular polymer bonded explosives. The sensitivity comparison of nonlinear and linear parameters of ultrasonic waves in the specimens shows that nonlinear acoustic parameters are more promising indicators to fatigue induced micro-damage than linear ones. The feasibility study of the micro-damage assessment of polymer bonded explosives by nonlinear ultrasonic technique in this work can be applied to damage identification, material degradation monitoring, and lifetime prediction of the explosive parts.

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Comparative study of the fracture toughness determination of a polymer-bonded explosive simulant

Cited by 18 publications

References 10 publications

Dynamic Brazilian Test of Brittle Materials Using the Split Hopkinson Pressure Bar and Digital Image Correlation

Dynamic Brazilian Test of Brittle Materials Using the Split Hopkinson Pressure Bar and Digital Image Correlation

Dynamic tensile deformation and fracture of a highly particle-filled composite using SHPB and high-speed DIC method

Experimental Investigation of the Acoustic Nonlinear Behavior in Granular Polymer Bonded Explosives with Progressive Fatigue Damage

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