1.1 本试验方法确立了对金属材料进行仪器化夏比V型缺口（CVN）和仪器化小型化夏比V型缺口（MCVN）冲击试验的要求。该方法基于测试钢的经验，提供了关于测试材料断裂行为的进一步信息（除了吸收的能量之外）。给出了测量和记录设备的最低要求，使其灵敏度和吸收能量测量值与试验方法中获得的相似 E23 和 E2248 都实现了。 1.2 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 仪器化冲击测试为配备刻度盘或光学编码器或两者的测试机器提供了与破裂CVN或MCVN样品相关的吸收能量的独立测量。 5.2 仪器化冲击试验在MCVN试验中特别有效，因为校准应变的分辨率-计量撞击器不一定随着测量力的大小而减小。 5.3 除了提供仪器吸收能量的测量（ W t ），仪器化测试能够确定特征力、部分仪器化吸收能量和位移参数。根据材料和测试温度，这些参数可以提供关于材料断裂行为的有用信息（除了仪器吸收的能量之外），例如:对应于下架开始的温度；对应于上层货架开始的温度；部分仪器化吸收能量达到最大力（ W 米 );部分仪器吸收的能量高达脆性断裂开始时的力（ W bf );最大力后部分仪器化吸收能量（ W t – W 米 );一般屈服力（ F gy );脆性断裂起始力（ F bf );逮捕部队（ F a ).仪器化数据还可用于突出基于未对准或其他关键测试因素应丢弃的测试结果。

1.1 This test method establishes the requirements for performing instrumented Charpy V-notch (CVN) and instrumented miniaturized Charpy V-notch (MCVN) impact tests on metallic materials. This method, which is based on experience developed testing steels, provides further information (in addition to the absorbed energy) on the fracture behavior of the tested materials. Minimum requirements are given for measurement and recording equipment, such that similar sensitivity and comparable absorbed energy measurements to those obtained in Test Methods E23 and E2248 are achieved. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Instrumented impact testing provides an independent measurement of the absorbed energy associated with fracturing CVN or MCVN specimens for test machines equipped with a dial or optical encoder, or both. 5.2 Instrumented impact testing is particularly effective in MCVN testing, since the resolution of a calibrated strain-gaged striker does not necessarily decrease with the magnitude of the measured force. 5.3 In addition to providing a measure of instrumented absorbed energy ( W t ), instrumented testing enables the determination of characteristic force, partial instrumented absorbed energy, and displacement parameters. Depending on the material and test temperature, these parameters can provide useful information (in addition to instrumented absorbed energy) on the fracture behavior of materials such as: the temperature that corresponds to the onset of the lower shelf; the temperature that corresponds to the onset of the upper shelf; partial instrumented absorbed energy up to maximum force ( W m ); partial instrumented absorbed energy up to the force at brittle fracture initiation ( W bf ); partial instrumented absorbed energy after maximum force ( W t – W m ); general yield force ( F gy ); force at brittle fracture initiation ( F bf ); arrest force ( F a ). The instrumented data may also be used to highlight test results that should be discarded on the basis of misalignment or other critical test factors.