无损检测技术在机械焊接结构中的应用

基于采用无损检测对于机械焊接结构的重要性,分析机械焊接机构存在的缺陷,探讨射线无损检测、超声波检测、全息探测检测等无损检测技术在机械焊接结构中的应用。与传统的检测技术相比,无损检测技术可保证焊接结构的安全性和完整性,提高检测效率。     

中国有色总公司无损检测技术工作会议

4月1日在宝鸡由总公司军工处主持召开了中国有色总公司无损检测技术工作会议。参加会议的有总公司所属研究院、所以及有色金属加工厂的主管无损检测行政,技术的领导同志以及工程技术人员。会议分析了有色冶金系统的无损检测工作的现状,总结了多年来在无损检测技术的     

《冶金自动化》2001年总目次

综述与评论钢铁工业自动化的新技术 (上 )胡仁安 1 1………………………第 3届全球智能控制和自动化大会 (ＷＣＩＣＡ2 0 0 0 )综述　孙彦广 ,霍　 1 5………………………………………………工业自动化技术的特点及工业自动化的重要性于常友 2 1……钢铁工业自动化的新技术 (下 )胡仁安 2 6………………………无损检测技术在日本冶金工业中的应用 (上 )胡　超 2 1 2………无损检测技术在日本冶金工业中的应用 (下 )胡　超 3 1………液压故障智能诊断技术探讨与展望黄志坚 3 4…………………冶金自动化工程开发设计规范概述———促进…     

金属材料超声无损检测技术应用研究

为了提高石油工业装备检测水平,促使石油生产工业健康、可持续发展,现提出一套行之有效的金属材料超声无损检测技术应用方案。首先,针对超声无损检测技术、算法与研究概况,研究了连续波透射法、共振法、脉冲反射法、脉冲透射法四种超声无损检测方法。其次,从灵活选择超声无损检测技术方法、在对的时间段内实施无损检测工作、对超声无损检测方式加以升级等方面入手,将超声无损检测技术科学地应用到石油行业金属材料中。结果表明：本文所提出的超声无损检测技术应用方案具有较高的可靠性和可行性,不仅可以精确化检测石油行业金属材料内部缺陷,还能实现对材料微观部分的精细化检查,有效地提高了金属材料把控质量。希望通过这次研究,为相关人员提供有效的借鉴和参考。     

“2021中国自动及智能在线无损检测技术论坛”会议预通知

正为促进自动及智能在线无损检测技术的发展,交流研究成果及实践经验,中国金属学会无损检测分会定于2021年9月11—12日在北京召开"2021中国自动及智能在线无损检测技术论坛",全方位、高水平、深层次交流、展示在线自动及智能无损检测的新技术发展和应用。会议将邀请国内著名专家、学者做报告,并邀请国内外知名无损检测设备厂商(公司)参加自动及智能无损检测设备展。本次会议由中国金属学会无损检测分会、钢研纳克检测技术股份有限公司联合主办。     

金属锅炉焊接过程中无损检测技术应用研究

由于无损检测技术在金属锅炉焊接应用过程中的应用存在一些缺陷,为了保证金属锅炉焊接工作的整体质量,提出了金属锅炉焊接过程中无损检测技术应用研究。通过对无损检测技术进行详细分析,发现无损检测技术在金属锅炉焊接过程中可以检测金属锅炉材料在材质方面的缺陷,还可以检测金属锅炉焊接过程中存在的宏观缺陷和微观缺陷,提高了金属锅炉焊接工作的整体质量。     

无损检测技术可靠性的探讨

本文对无损检测技术可靠性进行探讨,分析了无损检测技术可靠性的真正含义,论述了可靠性对产品质量的影响,分析了影响可靠性的因素,增加无损检测的可靠性措施,提高了产品质量检测的可靠性.     

无损检测技术在冶金设备机械安检中的应用

分析了超声波检测、红外热像无损检测、超声红外热像检测、激光全息检测等几种无损检测技术在冶金机械设备安检中的应用情况。无损检测技术能够为安检操作人员提供快速准确的决策依据,是冶金生产消除故障隐患、保证安全生产的重要手段。     

红外热波检测技术在微孔丝网复合材料中的应用探讨

微孔丝网复合材料因其特殊的孔隙结构,难以通过常规无损检测手段检查出其制造过程中的分层、开裂等内部缺陷.本文采用红外热波技术开展了微孔丝网复合材料无损检测的应用研究,结果表明:红外热波无损检测技术能够确定材料缺陷的位置和形状,通过解剖发现检出的最小分层开裂宽度6 μm.实验证明红外热波无损检测技术是一种新型有效的的微孔材料检测方法.     

“2021中国自动及智能在线无损检测技术论坛”会议预通知

正为促进自动及智能在线无损检测技术的发展,交流研究成果及实践经验,中国金属学会无损检测分会定于2021年9月11—12日在北京召开"2021中国自动及智能在线无损检测技术论坛",全方位、高水平、深层次交流、展示在线自动及智能无损检测的新技术发展和应用。会议将邀请国内著名专家、学者做报告,并邀请国内外知名无损检测设备厂商(公司)参加自动及智能无损检测设备展。     

The Neurocognitive Driving Test: Applying Technology to the Assessment of Driving Ability Following Brain Injury.

Objective: To compare the Neurocognitive Driving Test (NDT) with an established driving assessment method. Study Design: A prospective matched-control study. Participants: Fifteen adult volunteers with acquired brain injury (ABI), aged 21-59 years, referred for a driving evaluation and 15 healthy control (HC) participants. Methods: Individuals with ABI were administered the NDT and a traditional hospital-based driving evaluation. An overall performance score was calculated and used to rank order driving ability. HCs were administered the NDT to establish NDT performance range. Main Outcome Measures: Overall performance on the NDT; overall performance on a comprehensive hospital-based evaluation. Results: Comparison of the rank orders of driving ability for participants with ABI revealed a significant Spearman correlation. NDT scores discriminated between individuals with ABI who passed the driving evaluation and those who failed. Conclusions: Results help establish the potential utility of the NDT for evaluating driving ability in persons with ABI. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

组合无损检测技术及其在无缝钢管在线自动检验中的应用

分析了常规无损检测方法的特点及其局限性,讨论了以热轧无缝钢管为检测对象时检出各类缺陷的组合原则。在此基础上介绍一种由电磁分钢、涡流探伤、漏磁探伤及超声测量组成的钢管在线组合检测技术及其应用结果。实践证明,它能够有效地在钢管生产流水线上起到质量把关的作用     

Damage Localization and Finite-Element Model Updating Using Multiresponse NDT Data

New techniques for both finite-element model updating and damage localization are presented using multiresponse nondestructive test (NDT) data. A new protocol for combining multiple parameter estimation algorithms for model updating is presented along with an illustrative example. This approach allows for the simultaneous use of both static and modal NDT data to perform model updating at the element level. A new damage index based on multiresponse NDT data is presented for damage localization of structures. This index is based on static and modal strain energy changes in a structure as a result of damage. This method depicts changes in physical properties of each structural element compared to its initial state using NDT data. Deficient or potentially damaged structural elements are then selected as the unknown parameters to be updated by parameter estimation. Error function normalization, error function stacking, and multiresponse parameter estimation methods are proposed for using multiple data types for simultaneous stiffness and mass parameter estimation. Also, multiple sets of measurements with various sizes and missing data points can be utilized. This paper uses a laboratory grid model of a bridge deck built at the University of Cincinnati Infrastructure Institute and the corresponding NDT data for validation of the above damage localization and model updating methods. Multiresponse parameter estimation has been utilized to update the stiffness of bearing pads, and both the stiffness and mass of the connections, using static and dynamic NDT data. The static and modal responses of the updated grid model presented a closer match with the NDT data than the responses from the initial model.     

热处理工艺对超高强度海洋平台用钢板E690组织和NDT性能的影响

研究了不同热处理工艺对超高强度海洋平台用钢F690组织及NDT性能的影响.结果表明,Q-P-T工艺得到的组织为板条贝氏体＋粒状贝氏体＋残余奥氏体,其NDT温度为-55℃;Q-T工艺得到的组织为板条贝氏体＋粒状贝氏体,其NDT温度为-40℃.Q-P-T工艺得到的残余奥氏体软相及取向混乱的贝氏体板条束能有效阻碍裂纹的扩展,NDT性能得到提高.     

钢丝绳无损检测技术的应用与开发

简述钢丝绳无损检测的意义,并简介ＬＭＡ型钢丝绳无损检测系统的原理与特点。提出其现场应用解决方案：（１）传感器的现场安装方法;（２）钢丝绳劣化断定准的确定;（３）钢丝绳数据管理。该技术在宝钢的应用实例表明：利用ＬＭＡ型钢丝绳无损检测系统对在役钢丝绳进行无损检测,可以保证钢丝绳丝运行的安全及可靠性。     

金属基复合材料的无损检测

对可用于某些金属基复合我损检测的一些主要方法进行介绍和评价,分析了它们的特点和适用性,所涉及的方法有：超声波反射法,速度法,衰减法,软Ｘ射线法,工业ＣＴ法,声学振动法和声发射检测法。     

几种钢管探伤方法可靠性分析

论述了钢管探伤中使用的漏磁、涡流、超声和电磁超声几种无损检测方法的可靠性，通过对上述几种方法可靠性的比较可以看出，电磁超声方法具有其他无损检测方法不可比拟的优点和广阔的应用前景。     

A comparison of intensive neurodevelopmental therapy plus casting and a regular occupational therapy program for children with cerebral palsy

The purpose of this research was to evaluate the combined effect of intensive neurodevelopmental therapy (NDT) and casting in improving hand function, quality of upper-extremity movement and range of motion in children aged between 18 months and 4 years with cerebral palsy (CP). A randomized crossover design was used to evaluate the difference between intensive NDT plus casting and a less intensive regular occupational therapy (OT) program. Blinded assessments of hand function, quality of upper-extremity movement, and parents' perception of hand-function performance were carried out at baseline, 4 months (end of first intervention period), 6 months (after a 2-month 'washout' period), and 10 months (end of second intervention period). Analysis of the outcomes revealed no significant differences in hand function, quality of upper-extremity movement, or parents' perception of hand-function performance between the two treatment groups-intensive NDT plus casting or regular OT programs. There does not appear to be any beneficial effect of an increased amount of therapy for the children in this study.     

Nondieting versus dieting treatment for overweight binge-eating women.

This study evaluated the effectiveness of nondieting versus dieting treatments for overweight, binge-eating women. Participants (N?=?219) were randomly assigned to 1 of 3 groups: diet treatment (DT), nondiet treatment (NDT), or wait-list control (WLC). DT received a balanced-deficit diet reinforced with behavioral strategies. NDT received therapy designed to help participants break out of their dieting cycles. Treatment in both conditions was administered in weekly groups for 6 months, followed by 26 biweekly maintenance meetings, for a total of 18 months of contact. At 6 months posttreatment, DT lost 0.6 kg while NDT gained 1.3 kg. Both treatment groups reduced their Binge Eating Scale scores significantly more than WLC. At 18-month follow-up, both treatment groups experienced weight gain but maintained similar reductions in binge eating. Results indicate that neither intervention was successful in producing short- or long-term weight loss. Therapist biases, which may have affected treatment integrity, and other methodological issues are discussed in relation to the small weight losses achieved. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

乌江某水电站压力钢管的安全性评价

基于WDL610钢的NDT评价和断裂评定表明,乌江某水电站压力钢管在焊态情况有足够的断裂抗力,是安全的.同时鉴于工程实际情况可以免除消除残余应力处理.