Mechanical Engineering Reviews最新文献

Revisited Japanese research literature on the stalk contraction and relaxation of stalked ciliates 回顾了日本关于有柄纤毛虫茎缩和松弛的研究文献

IF 3

Mechanical Engineering Reviews Pub Date : 2021-01-01 DOI: 10.1299/mer.21-00252

S. Ryu, Haipeng Zhang, M. Nagai

引用次数: 0

Customization of product, service, and product/service system: what and how to design 产品、服务和产品/服务系统的定制:设计什么和如何设计

IF 3

Mechanical Engineering Reviews Pub Date : 2019-01-01 DOI: 10.1299/mer.18-00184

T. Hara, T. Sakao, Ryoichiro Fukushima

引用次数: 13

The cosα method for X-ray residual stress measurement using two-dimensional detector 用二维探测器测量x射线残余应力的cosα法

IF 3

Mechanical Engineering Reviews Pub Date : 2019-01-01 DOI: 10.1299/MER.18-00378

Keisuke Tanaka

{"title":"The cosα method for X-ray residual stress measurement using two-dimensional detector","authors":"Keisuke Tanaka","doi":"10.1299/MER.18-00378","DOIUrl":"https://doi.org/10.1299/MER.18-00378","url":null,"abstract":"detector Abstract X-ray stress measurement is widely used as one of the most powerful nondestructive tools to measure residual stresses in polycrystalline solids. In most cases, the sin 2  method has been used to determine the stress. In recent years, however, the cos  method has attracted engineers as a new method to measure the stress using two-dimensional detectors, such as imaging plates. The present article is the review of the state of the art of the cos  method. For biaxial stress cases, t he cos  method utilizes the whole Debye-Scherrer ring recorded on a two-dimensional detector taken by single exposure of X-rays, and normal and shear stresses are determined simultaneously. The accuracy of the stress measurement of the cos  method has been confirmed to be equivalent to that of the sin 2  method for various metals. The simple optical system of the cos  method makes stress analyzers smaller, lighter and more convenient to use for on-site or field measurements. A recent portable stress analyzer adopting the cos  method shortens the measurement time to 60 s. The method has been further developed to analyze triaxial residual stresses. Various advantages of the cos  method are highlighted in comparison with the other methods of X-ray stress determination. Applications of the cos  method to machines and","PeriodicalId":43380,"journal":{"name":"Mechanical Engineering Reviews","volume":"1 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1299/MER.18-00378","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66405788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 71

Recent researches on morphing aircraft technologies in Japan and other countries 日本和其他国家对变形飞机技术的最新研究

IF 3

Mechanical Engineering Reviews Pub Date : 2019-01-01 DOI: 10.1299/MER.19-00197

Natsuki Tsushima, M. Tamayama

{"title":"Recent researches on morphing aircraft technologies in Japan and other countries","authors":"Natsuki Tsushima, M. Tamayama","doi":"10.1299/MER.19-00197","DOIUrl":"https://doi.org/10.1299/MER.19-00197","url":null,"abstract":"Morphing aircraft technology has recently gained attention of many research groups by its potential for aircraft performance improvement and economic flight. Although the performance of conventional control surfaces is usually compromised in off-design flight conditions, the morphing technique may achieve optimal flight performance in various operations by to adaptively altering the wing shape during flight. This paper aims to provide a comprehensive review on morphing aircraft/wing technology, including morphing mechanisms or structures, skins, and actuation techniques as element technologies. Moreover, experimental and numerical studies on morphing technologies applying those elemental technologies are also introduced. Recent research on these technologies are particularly focused on in this paper with comparisons between developments in Japan and other countries. Although a number of experimental and numerical studies have been conducted by various research groups, there are still various challenges to overcome in individual elemental technologies for a whole morphing aircraft or wing systems. This review helps for researchers working in the field related to morphing aircraft technology to sort out current developments for morphing aircraft.","PeriodicalId":43380,"journal":{"name":"Mechanical Engineering Reviews","volume":"1 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1299/MER.19-00197","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66405921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10