Analysis of Test Results and Test Quality during Certification of Non-Destructive Testing Specialists

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
V. V. Murav’ev, L. V. Volkova, O. V. Murav’eva, S. A. Murashov
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引用次数: 0

Abstract

This article analyzes the results of personal certification for eddy current testing of railway facilities. The influences of education level, the work experience, the candidate age on the qualifying examinations results are considered. The conformity between test task difficulties and certification candidate training is analyzed with Rasch method. The characteristic curves of test task difficulties and the characteristic curves of candidate training levels are constructed. The results general and special examinations of  2020 and 2021 are analyzed to identify extreme test questions. The research results enable to assess the candidate training and the test task difficulties through latent parameters measured as logit unit. The analysis identified test tasks with overstated and understated task difficulty logits compared with the logits of the candidate training, assessed the correspondence between test difficulties and training candidate level, and assessed a distribution uniformity of the tasks difficulty. The required training logit of candidates for the certification is calculated for successful passing general and special exam tests. The getting results give a basis for further analysis of the tasks complexity, identification the reasons for the insufficiency of the auditory material familiarization for the tasks with low rate of response, for making adjustments to the consulting sessions, as well as the content and form of the test.

Abstract Image

Abstract Image

无损检测专家认证期间的检测结果和检测质量分析
摘要 本文分析了铁路设施涡流检测个人认证的结果。考虑了教育水平、工作经验、候选人年龄对资格考试结果的影响。采用 Rasch 方法分析了测试任务难度与认证候选人培训之间的一致性。构建了考试任务难度特征曲线和考生培训水平特征曲线。对 2020 年和 2021 年的普通考试和特殊考试成绩进行分析,找出极端试题。研究结果可以通过以对数单位测量的潜参数来评估考生培训和测试任务难度。分析确定了与考生培训对数相比存在高估和低估任务难度对数的测试任务,评估了测试难度与考生培训水平之间的对应关系,并评估了任务难度的分布均匀性。在成功通过一般和特殊考试测试的情况下,计算了认证候选人所需的培训对数。得出的结果为进一步分析任务的复杂性、确定反应率低的任务的听觉材料熟悉程度不足的原因、调整咨询课程以及测试的内容和形式提供了依据。
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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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