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新的成形极限曲线(FLC)检测国家标准GB/T 24171-2009分为两个部分,第1部分GB/T 24171.1-2009和第2部分GB/T 24171.2-2009。第1部分的内容与传统的测试方法基本相同,适合大多数实验室及现场条件下的成形极限曲线检测,第2部分提出了一种更准确的实验室成形极限曲线测定方法,现阶段只有部分实验室能够满足试验条件要求。针对标准第2部分,对其中关于试样、试验装置、试验条件和应变分析等一些关键内容做了试验研究,就新标准的应用提出了一些建议。
The new forming limit curve (FLC) testing national standard GB / T 24171-2009 is divided into two parts, Part 1 GB / T 24171.1-2009 and Part 2 GB / T 24171.2-2009. The content of part 1 is basically the same as the traditional test method, which is suitable for the testing of forming limit curve under most laboratory and field conditions. The second part presents a more accurate method for the determination of limit curve of laboratory forming. At this stage only part Laboratory to meet the test conditions. For the second part of the standard, some key contents about the sample, test equipment, test conditions and strain analysis are studied and some suggestions are put forward for the application of the new standard.