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文章介绍了煤矿许用YMJ-D型雷管编码机的结构、工作原理、技术性能及安全性能,并提供了有关的检验数据. 相似文献
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锅炉是热电企业生产运营不可或缺的关键性设备,相应地,有关单位和个人有必要对正在运行以及即将投入运行的锅炉开展基于安全性的定期检测,以便及时掌握设备的运行情况,了解运行中出现的问题,做到提前消除各类事故隐患,最大限度避免运行状态的锅炉发生重大安全事故,确保锅炉使用单位的安全生产。本文就检验检测机构如何进行锅炉安全性能检验和能效测试的相关问题进行分析,并探讨性提出新《条例》中锅炉定期检验方法。 相似文献
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文中通过对几种煤矿许用炸药沼气安全性的考察,反映了巷道沼气安全性检验中,臼炮炮孔的扩孔度对炸药引燃沼气的影响,并分析了归纳找出其变化规律。 相似文献
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大宗散货包装——集装袋的安全性评估 总被引:2,自引:2,他引:0
研究了针对盛装大宗散货的集装袋包装运输的相关国际法规的要求,分析了集装袋在不同运输环境中的潜在危险性,提出了应通过对集装袋力学性能、防静电性能、防老化性能进行检验,以对其安全性进行综合评估。 相似文献
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J. Pfanzagl 《技术计量学》2013,55(4):525-526
A nonrandomized sign test is described that is less conservative than the commonly prescribed, and used, sign test for experiments in which neutral responses are possible. Tables of critical values are given for the new one-sided test with α = 0.01 and 0.05 (which can also be used for two-sided tests with α = 0.02 and 0.10). 相似文献
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闭口塑料容器一直采用桶身钻孔进行液压和气密试验,浪费较大。文章提出了在桶盖上钻孔进行液压和气密试验的方法。该方法结构简单,克服了密封等难题.每年可为全国节省试验费用百万元。 相似文献
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A multivariate T2 chart is developed based on the Generalized Likelihood Ratio Test (GLRT) without a priori information about potential mean deviations. Identification of response variables from a T2 chart is challenging and has received considerable attention recently. By highlighting the intrinsic relationship between various multivariate control charts and statistical hypothesis testing, this paper presents a theoretical framework for various individual multivariate control charts including the T2 chart, regression-adjusted chart and M chart. The performance of these control charts is compared under different correlation structures among variables and different mean deviations. A hybrid control chart is also proposed based on the GLRT and union-intersection test, which can serve as a complementary diagnosis tool for the T2 chart. 相似文献
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中央空调系统现场检测方法初探 总被引:3,自引:0,他引:3
本文提出了适用于现场的中央空调系统性能检测的整套方法,并通过多项工程现场实测,验证了该方法的现场可行性。本文以“组合式空调箱性能现场测试”为例,简述该方法的现场应用,并对该方法作全面总结。 相似文献
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W. C. Du Pr 《Packaging Technology and Science》1993,6(1):13-21
A brief historic overview is given of simulation research in the TNO Packaging Research Centre, starting with ideas initiated some 5 years ago and ending with those being considered today. Some of the increasing number of simulation tools available are discussed, and a few thoughts are presented for prospective users making an intelligent choice. The paper presents what the TNO Centre for Packaging Research tries to simulate at present, and then considers why and how such simulations are carried out. Developing simulation techniques is a long-term commitment and it should be realized that only by performing such simulations is it possible to find out what is possible, affordable and practical. Sometimes the applicability of new techniques can be discussed successfully with representatives of the target group only if a few examples are shown to them. 相似文献
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首先介绍了风量罩的测试原理及方法,风量罩测试试验台的设计原理及使用方法。本试验台的流量测量方法是采用多喷嘴流量测量方法。多喷嘴流量法具有测量流量大,耐磨损、使用范围广的特点。其次,介绍了风量罩测试试验台的组成、设计主要参数及选用的各种仪器,并结合具体工程案例说明了试验台的组成及使用方法,在所设计的试验台上进行了风量罩的测试工作,并给出了测试报告,达到了比较满意的使用效果,能为今后的工程实践提供有力的理论支持,为风量罩的年度校准提供了保障,并希望能为我国风量罩标准的制定提供参考。 相似文献
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Jeonghoon Mo 《工程优选》2017,49(10):1750-1760
In this article, the problems of test sequence generation and scheduling optimization for a tester with parallel devices are considered in order to reduce inspection times. Two optimization problems are formulated for test sequence generation and the scheduling of parallel devices, and then algorithms to address these problems are proposed. The proposed algorithms were tested via simulation and experiments. The test results show two to four times improvement over existing methods. 相似文献
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船体水上防锈漆体系加速试验方法研究 总被引:1,自引:1,他引:0
根据船舶水线漆和船壳漆的使用环境和主要破坏因素,设计了一套以盐雾-人工加速老化(紫外光/冷凝)交替暴露和带人造缺陷样板的加速暴露试验方法为主,结合海水冲刷、附着力等主要力学性能测定的试验方案。对8种国内外船体水上部份防锈漆体系的性能进行综合评定,其结果采用数字量化评分。试验结果表明,该试验方法可在相当短的时间内对各类船体水上防锈漆体系的综合性能作出正确的评定。 相似文献