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自从法国人Charpy提出冲击试验以来己有几十年历史,在工程上虽然起过积极作用,但随着现代技术的发展,人们愈加感到夏比试验因为没有明确的物理意义而又不能反映实际断裂过程,尤其评定焊接质量更是无能为力。因此,从60年代以后除采用一些夏比试验的参量(LMC、LME、K_(POIE)、J_(POIE)等)外,还提出了许多的动态加载试验方法,这些方法采用的试样普遍比夏比试样大,缺口形式也不同,因此需要较大的冲击能量;现代大型钢结构的防断安全设计和
Since the French Charpy put forward the impact test for decades and has played a positive role in engineering, with the development of modern technology, people are more and more aware of the Charpy test because there is no clear physical meaning and can not reflect the actual fracture Process, in particular, to assess the quality of welding is powerless. Therefore, in addition to using some Charpy test parameters (LMC, LME, K POIE, J POIE, etc.) since the 1960s, many dynamic loading test methods have also been proposed, Charpy sample large, notched form is also different, so the need for greater impact energy; modern large-scale steel structure security design and security