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通过对检测过程中的人员、仪器、试验材料、检测方法、环境和样品这六个方面对检测质量进行控制,可以有效的排除检测环节中所有导致不合格不满意因素,从而达到检测数据的准确性。 相似文献
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通过使用标准样品对人员、不同原理的分析方法以及仪器进行质量控制论述,论证了标准样品在实验室质量控制中的作用。 相似文献
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钢铁厂理化检测试验室质量控制就是使用一定的管理技术与统计方法对理化检测数据质量进行控制.文章引用精度管理做为理化检测试验室的质量控制手段.经过近几年的运行和不断的完善,取得了一定的质量控制效果. 相似文献
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对现场在线仪器分析质量控制中的A、B、C管理进行了详细介绍,主要包括A、B、C管理的概念、目的以及执行过程。A管理的主要目的是对仪器分析的短期精密度(即短期漂移)进行管理,通过观察标准样品均值x以及平行测定标准样品分析值波动程度R的变动,来实现对分析仪器精密度的监控,也称仪器的漂移校正管理或标准化管理。控制同一分析室内同类分析仪器分析值间的偏差程度,防止在生产过程中因两台仪器切换分析时,出现系列生产样分析值不相衔接等情况的发生,使现场两台同类型仪器的分析值基本一致,将两台同类型的仪器进行对照分析并校正到相互基本一致的工作,称为B管理。将仪器分析值与化学分析值或更高一级别的分析方法测定值进行系统比较,并校正到与化学值基本一致的工作,称为C管理。ABC管理对现场仪器分析的质量控制具有良好的管理及指导作用。 相似文献
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JL-30 000 J落锤冲击试验机控制系统改造 总被引:1,自引:0,他引:1
采用先进的PLC控制技术和光电编码器检测技术对JL-30000落锤冲击试验机继电器-单片机的控制模式进行升级改造,改造后仪器以触摸屏作为终端操作机,通过PLC进行采集脉冲计数、控制落锤提升、冲击等试验的全过程。 相似文献
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热轧产品的质量很大程度上取决于起冷却和润滑作用的乳液的性能。通过分析乳液在铝及铝合金热轧过程中的主要作用及原理,介绍了常见的几种润滑形式及热轧粘铝形成机理,同时通过对乳液的重点指标控制,阐述了铝及铝合金热轧产品表面质量的控制手段。此外还介绍了使用Mastersizer颗粒度仪器检测乳化液颗粒度及其维护管理。 相似文献
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测量钢液氢含量的方法有离线定氢和在线定氢。离线定氢通过从钢液中取样,凝固后实验室检测氢含量。在线定氢通过测量出钢液的平衡氢分压后利用Sievert定律换算出氢含量。与离线定氢相比,在线定氢影响因素少,系统重现性好,测量周期短,满足真空处理、连铸等快节奏定氢的需要。 相似文献
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激光板形测量技术现状及发展 总被引:8,自引:0,他引:8
简单描述激光热轧带钢板形测量技术的现状 ,介绍几种采用激光测量技术的板形测量原理 ,分析各种技术方案的特点 ,结合作者开发多束激光板形仪工作 ,指出热轧带钢板形测量技术今后的发展方向 相似文献
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绝缘电阻的测量在电气工程中必不可少 ,通过绝缘电阻的测量 ,可事先发现并杜绝电气系统的故障。电气安装测试及运行维护人员应给予足够的重视。介绍了使用兆欧表测量绝缘电阻时的一些影响因素及测量时应注意的问题 相似文献
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The relationship between observable responses and the latent constructs they are purported to measure has received considerable attention recently, with particular focus on what has become known as formative measurement. This alternative to reflective measurement in the area of theory-testing research is examined in the context of the potential for interpretational confounding and a construct's ability to function as a point variable within a larger model. Although these issues have been addressed in the traditional reflective measurement context, the authors suggest that they are particularly relevant in evaluating formative measurement models. On the basis of this analysis, the authors conclude that formative measurement is not an equally attractive alternative to reflective measurement and that whenever possible, in developing new measures or choosing among alternative existing measures, researchers should opt for reflective measurement. In addition, the authors provide guidelines for researchers dealing with existing formative measures. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Performance measurement has been subject to a considerable amount of research and attention over the past 15 years. The inadequacy of traditional financially based performance measurement systems and the introduction of nonfinancial measures have been the triggers for much of this research. The purpose of this paper is to review the main performance measurement frameworks and their application by U.K. construction firms and to identify gaps in knowledge and practice that suggest future research. The contemporary performance measurement frameworks are reviewed, including the Balanced Scorecard and the European Foundation for Quality Management Excellence Model. The status of performance in the U.K. construction industry is discussed, in addition to project/operational-level performance measurement and the linkage between performance measurement and strategic management. Gaps in knowledge and practice are overviewed both in general and for the construction industry in specific, thus suggesting future research. 相似文献
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Value management (VM) is a useful method to use when dealing with issues such as budget and schedule challenges arising in the construction industry. However, little research has been done to measure the performance of VM studies, which has made many potential users reluctant to use VM. This paper presents a critical review of the development of performance measurement in general and the performance measurement in the construction industry, with a special focus on the performance measurement of VM studies in construction. The strengths and weaknesses of the existing measurement frameworks are investigated in the context of VM studies. It is concluded that traditional performance measurement of VM studies focusing on cost reduction is insufficient. Many other perspectives, such as clarifying objectives, and improving communication among stakeholders, should be considered seriously when making the measurement. This paper reveals that the existing frameworks to measure VM studies are inappropriate. It suggests that perspectives such as multicriteria measurement, flexible framework for different practice, and benchmarking to identify best practice could be adapted to develop a performance measurement framework for VM studies. 相似文献
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现代化工业生产对于车内零部件产品的要求逐步提高的大形势下,针对质量管控中传统尺寸测量标准分析方法存在精度低的缺陷,提出了一种车用铜铝合金发动机轴承尺寸测量标准分析方法的设计。通过提取滤波处理后轴承尺寸标准数据集,采用三点均匀测量的方式,计算轴承边缘标准尺寸允许误差,选择轴承中心检测方法,修正轴承尺寸测量标定范围,修正轴承尺寸测量标定范围。设计对比实验,验证提出方法在实际应用中,降低了测量误差,提高了监测工作效率,有力支持了质量检验工作。 相似文献
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针对应用"过程的监视和测量"方法的有效性不足,从标准理解、监视和测量适用的统计技术方面阐述统计技术在过程的监视和测量中的应用。 相似文献