{"title":"Revisited Japanese research literature on the stalk contraction and relaxation of stalked ciliates","authors":"S. Ryu, Haipeng Zhang, M. Nagai","doi":"10.1299/mer.21-00252","DOIUrl":"https://doi.org/10.1299/mer.21-00252","url":null,"abstract":"","PeriodicalId":43380,"journal":{"name":"Mechanical Engineering Reviews","volume":"1 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66405970","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}
Customizing offerings to match customers’ specific needs is a common practice for manufacturers striving to maintain their competence in markets. Despite Product/Service Systems (PSSs) having devel ...
{"title":"Customization of product, service, and product/service system: what and how to design","authors":"T. Hara, T. Sakao, Ryoichiro Fukushima","doi":"10.1299/mer.18-00184","DOIUrl":"https://doi.org/10.1299/mer.18-00184","url":null,"abstract":"Customizing offerings to match customers’ specific needs is a common practice for manufacturers striving to maintain their competence in markets. Despite Product/Service Systems (PSSs) having devel ...","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.18-00184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66406085","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}
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
{"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}
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.
{"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}
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