Case Studies in Mechanical Systems and Signal Processing最新文献_第2页

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Case Studies in Mechanical Systems and Signal Processing Pub Date : 2016-06-01 DOI: 10.1016/S2351-9886(16)30014-8

引用次数: 0

Upgrade of an automated line for plastic cap manufacture based on experimental vibration analysis 基于实验振动分析的塑料盖生产自动化生产线改造

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2016-06-01 DOI: 10.1016/j.csmssp.2016.03.002

Alberto Martini, Marco Troncossi

引用次数: 16

A comparative study of adaptive filters in detecting a naturally degraded bearing within a gearbox 自适应滤波器检测齿轮箱内自然退化轴承的比较研究

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2016-06-01 DOI: 10.1016/j.csmssp.2015.11.001

Faris Elasha , David Mba , Cristobal Ruiz-Carcel

{"title":"A comparative study of adaptive filters in detecting a naturally degraded bearing within a gearbox","authors":"Faris Elasha , David Mba , Cristobal Ruiz-Carcel","doi":"10.1016/j.csmssp.2015.11.001","DOIUrl":"10.1016/j.csmssp.2015.11.001","url":null,"abstract":"<div><p>The diagnosis of bearing faults at the earliest stage is critical in avoiding future catastrophic failures. Many diagnostic techniques have been developed and applied in for such purposes, however, these traditional diagnostic techniques are not always successful when the bearing fault occurs within a gearbox where the vibration response is complex; under such circumstances it may be necessary to separate the bearing vibration signature.</p><p>This paper presents a comparative study of four different techniques for bearing signature separation within a gearbox. The effectiveness of these individual techniques were compared in diagnosing a bearing defect within a gearbox employed for endurance tests of an aircraft control system. The techniques investigated include the least mean square (LMS), self-adaptive noise cancellation (SANC) and the fast block LMS (FBLMS). All three techniques were applied to measured vibration signals taken throughout the endurance test. In conclusion it is shown that the LMS technique detected the bearing fault earliest.</p></div>","PeriodicalId":100220,"journal":{"name":"Case Studies in Mechanical Systems and Signal Processing","volume":"3 ","pages":"Pages 1-8"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csmssp.2015.11.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77129646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

The in-plane deformation of a tire carcass: Analysis and measurement 轮胎胎体面内变形:分析与测量

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-12-01 DOI: 10.1016/j.csmssp.2015.09.001

Yi Xiong, Ari Tuononen

引用次数: 29

Assessment of sideband energy ratio technique in detection of wind turbine gear defects 边带能量比技术在风电齿轮缺陷检测中的应用评价

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-12-01 DOI: 10.1016/j.csmssp.2015.07.001

Pattabiraman T.R. , Srinivasan K. , Malarmohan K.

{"title":"Assessment of sideband energy ratio technique in detection of wind turbine gear defects","authors":"Pattabiraman T.R. , Srinivasan K. , Malarmohan K.","doi":"10.1016/j.csmssp.2015.07.001","DOIUrl":"10.1016/j.csmssp.2015.07.001","url":null,"abstract":"<div><p>Gearbox failure is one of the highest risk events in wind turbines. In most of the wind turbines, planetary gearboxes are preferred over conventional gearboxes due to their significant advantages. But condition monitoring of planetary gearboxes present a huge challenge to the vibration analysts due to complex design and construction of its unit, vibration transducer type and locations, wide frequency range of the vibrations, resolution required to separate frequencies and dynamic range required to observe both low frequency and high frequency components in the spectrum.</p><p>Due to strong Gear Mesh Frequency (GMF) signals, gear defect vibration characteristics can often be suppressed in the overall vibration signal. So there is a need to develop or utilize various special signal processing techniques in order to identify and monitor the progression of defects in gears more effectively.</p><p>This paper focuses on one such technique namely Sideband Energy Ratio (<em>SER</em>) for monitoring of gear defect progression in wind turbine gearboxes. Theory behind <em>SER</em> is and its significance in gear defect monitoring is presented in this paper through three case studies. In all the three case studies, <em>SER</em> of 2XGMF were found to be more sensitive than 1XGMF towards gear defect progression.</p></div>","PeriodicalId":100220,"journal":{"name":"Case Studies in Mechanical Systems and Signal Processing","volume":"2 ","pages":"Pages 1-11"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csmssp.2015.07.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76025402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Tuning material and component properties to reduce weight and increase blastworthiness of a notional V-hull structure 调整材料和部件性能，以减轻重量，提高概念v型船体结构的防爆性能

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-12-01 DOI: 10.1016/j.csmssp.2015.10.001

Weiran Jiang , Nickolas Vlahopoulos , Matthew P. Castanier , Ravi Thyagarajan , Syed Mohammad

{"title":"Tuning material and component properties to reduce weight and increase blastworthiness of a notional V-hull structure","authors":"Weiran Jiang , Nickolas Vlahopoulos , Matthew P. Castanier , Ravi Thyagarajan , Syed Mohammad","doi":"10.1016/j.csmssp.2015.10.001","DOIUrl":"10.1016/j.csmssp.2015.10.001","url":null,"abstract":"<div><p>In this paper, concepts are investigated for tuning material properties and component configurations in order to design structures with unique dynamic characteristics for mitigating blast loads while maintaining or reducing weight. The dynamic response index (DRI) is employed as an occupant injury metric for determining the effectiveness of each blast mitigation configuration that is considered. A finite element model of a notional V-hull structure is used as a numerical example in this study. The material properties and the configuration of the inner bulkheads that connect the V-shaped outer surface with the inner floor are used as design parameters for reducing the DRI at a typical occupant location. In this particular example, it is demonstrated that both the weight of the structure and the DRI can be reduced simultaneously. This is achieved by creating a new structural design that features energy absorbing and decoupling mechanisms among the bulkheads, floor, seat, and the occupant.</p></div>","PeriodicalId":100220,"journal":{"name":"Case Studies in Mechanical Systems and Signal Processing","volume":"2 ","pages":"Pages 19-28"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csmssp.2015.10.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89201311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

A throttle-less single rod hydraulic cylinder positioning system for switching loads 用于切换负载的无节流阀单杆液压缸定位系统

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-07-01 DOI: 10.1016/j.csmssp.2015.06.001

Ehsan Jalayeri, Ahmed Imam, Nariman Sepehri

引用次数: 10

Sensitivity study of the morphometric fitting on the pressure field inside ankle joints 形态拟合对踝关节内压力场的敏感性研究

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-07-01 DOI: 10.1016/j.csmssp.2015.04.001

R. D’Amato, R. Calvo, E. Gómez

引用次数: 12

Multi-objective optimization of a vehicle body by combining gradient-based methods and vehicle concept modelling 基于梯度法和整车概念建模相结合的车身多目标优化

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-07-01 DOI: 10.1016/j.csmssp.2015.06.002

G. De Gaetano , D. Mundo , C. Maletta , M. Kroiss , L. Cremers

引用次数: 15

Practical demonstration of a large-scale active vibration isolation system 大型主动隔振系统的实际演示

Case Studies in Mechanical Systems and Signal Processing Pub Date : 2015-07-01 DOI: 10.1016/j.csmssp.2015.03.001

Tiejun Yang , Yao Sun , Liubin Zhou , Michael J. Brennan , Zhigang Liu

引用次数: 7