发布求助
文献互助 智能选刊 最新文献

International Journal of Materials and Structural Integrity最新文献

筛选
英文 中文
Effect of substrate temperature on mechanical properties of SiCO thin film 衬底温度对SiCO薄膜力学性能的影响
International Journal of Materials and Structural Integrity Pub Date : 2015-08-13 DOI: 10.1504/ijmsi.2015.071115
Miao Zhang, N. Liao, Jie Shen, W. Xue
{"title":"Effect of substrate temperature on mechanical properties of SiCO thin film","authors":"Miao Zhang, N. Liao, Jie Shen, W. Xue","doi":"10.1504/ijmsi.2015.071115","DOIUrl":"https://doi.org/10.1504/ijmsi.2015.071115","url":null,"abstract":"In this study, unbalanced magnetron sputtering approach was used to prepare silicon oxycarbide (SiCO) ceramics in the form of thin film. The SiCO thin films were synthesised by reactive radio-frequency sputtering with a SiC target and oxygen gas. Nano-indentation and scratch test were used to study the mechanical properties of SiCO film at different substrate temperatures. An optimal temperature was proposed by analysing Young's modulus, surface roughness and adhesion strength.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2015.071115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767840","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: 0
Investigation on thermal reliability and optimisation design for high-power LED micro/nano system 大功率LED微纳系统热可靠性及优化设计研究
International Journal of Materials and Structural Integrity Pub Date : 2015-08-13 DOI: 10.1504/ijmsi.2015.071118
Haibiao Fan, Lin Deng, Zutao Gou, Li-qiang Zhang
{"title":"Investigation on thermal reliability and optimisation design for high-power LED micro/nano system","authors":"Haibiao Fan, Lin Deng, Zutao Gou, Li-qiang Zhang","doi":"10.1504/ijmsi.2015.071118","DOIUrl":"https://doi.org/10.1504/ijmsi.2015.071118","url":null,"abstract":"To optimise the overall structural design of high-power LED and to effectively improve thermal dissipation, we analyse the thermal structure of high-power LED. Firstly, the thermal problems of high-power LED are described in detail. A complete thermal model is established based on finite element method. Secondly, numerical simulations on the theoretical analysis of LED system are made. The results show that there are three aspects in this part of the thermal resistance. The thermal dissipation of LED could be increased and then the LED junction temperature is also controlled within a certain range. Secondly, we investigate the factors which mainly influence heat dissipation. Meanwhile, we simulate the relationships between the temperature of LED chip and the height h of the radiator, the radius R of the radiator and the radius r of LED lamp posts, respectively. The results show clearly the effects of various factors on the temperature of LED chip. Meanwhile, without affecting the structures of the radiator and ED lamp posts, the optimal values of each single factor are found. The results reveal the thermal field mechanism of LED system, which is very helpful for design and manufacturing of LED assembly.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2015.071118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767889","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: 0
Semi-flowable self-consolidating concrete and its application 半流自固结混凝土及其应用
International Journal of Materials and Structural Integrity Pub Date : 2015-08-13 DOI: 10.1504/IJMSI.2015.071110
G. Lomboy, Kejin Wang
{"title":"Semi-flowable self-consolidating concrete and its application","authors":"G. Lomboy, Kejin Wang","doi":"10.1504/IJMSI.2015.071110","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.071110","url":null,"abstract":"Semi-flowable self-consolidating concrete (SFSCC) was developed to address the issue of shape stability while possessing self-consolidation properties in pavement concrete. In an unrodded flow test using a standard slump cone, SFSCC has a flow diameter of 27.9-33.0 cm, slump of 15.2-20.3 cm and symmetric cone shape. The green strength of a freestanding fresh concrete cylinder in compression ranges from 1.3-2.5 kPa and the compaction factor should be ≥ 0.98. Applications to slip-form paving and sloping pavements are discussed based on two field constructions. The first is a bike path and the second is a street pavement. Both pavements were constructed without mechanical vibrators and were finished and cured in the same method as conventional concrete pavements.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.071110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767650","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: 4
Function-based scheduling method on initial identified water level of reservoir long-term optimal scheduling 基于函数的水库初始确定水位长期优化调度方法
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075831
Li Cailin, Chao Wang, Junchao Li, Qiaoya Liu, Xiaoju Wu, Ping Yang
{"title":"Function-based scheduling method on initial identified water level of reservoir long-term optimal scheduling","authors":"Li Cailin, Chao Wang, Junchao Li, Qiaoya Liu, Xiaoju Wu, Ping Yang","doi":"10.1504/IJMSI.2015.075831","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075831","url":null,"abstract":"In this paper, a function-based scheduling method combining with statistical analysis of historical runoff data and inflow data is proposed to calculate the initial water level of a reservoir under long-term optimal operation. Two-ary interpolation function and database searching are integrated in the solving process. An example is taken to demonstrate the feasibility and engineering practicability of this method. Initial water level obtained by this method establishes a foundation for making optimal scheduling plans.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"254"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075831","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66768122","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: 0
Evaluating the electromigration resistance of lead-free solders by utilising the sharp tip of a Cu trace 利用铜痕迹尖端评价无铅焊料的电迁移电阻
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075827
K. Hino, M. Saka
{"title":"Evaluating the electromigration resistance of lead-free solders by utilising the sharp tip of a Cu trace","authors":"K. Hino, M. Saka","doi":"10.1504/IJMSI.2015.075827","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075827","url":null,"abstract":"Owing to the miniaturisation of solder bump connections, evaluations of the electromigration (EM) resistance of various lead-free solders have become increasingly important. In this paper, by utilising the sharp tip of a Cu trace, a simple method including easy sample preparation is proposed for EM resistance evaluation. The sample is prepared by surrounding the Cu traces with solder, and the EM resistance is evaluated by supplying a current between the traces. The current flows in the anode trace and flows from its sharp tip to the solder. The total volume of observed hillocks in the designated area near the tip of the Cu trace per unit time of current supply is used to determine the EM resistance. Rankings of the EM resistance in various solders under the same supplied current and sample temperature are theoretically proven to be invariable, regardless of their values. For testing materials, Sn-3.0Ag-0.5Cu and Sn-3.5Ag-0.5Cu-0.07Ni-0.01Ge solders (wt %) are used with 4N (99.99%) purity Sn as a reference. The usefulness of the present method is demonstrated by evaluating the EM resistance of these solders.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"20 1","pages":"216"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075827","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767958","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: 0
A method to estimate minimum tooth number for flexspline in harmonic drive 谐波传动中柔轮最小齿数的估计方法
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075830
Hai-Lin Zhu, Z. Liu, M. Zou, Younsheng Li, Z. Qian
{"title":"A method to estimate minimum tooth number for flexspline in harmonic drive","authors":"Hai-Lin Zhu, Z. Liu, M. Zou, Younsheng Li, Z. Qian","doi":"10.1504/IJMSI.2015.075830","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075830","url":null,"abstract":"Selection of the tooth number is a challenging problem for engineers in designing harmonic drive, since the tooth number cannot be lower than a certain limit because of the gear strength. However, there is no equation to calculate the minimum tooth number for flexspline. In the present work a mathematical relation has been established to estimate the minimum tooth number for flexspline in harmonic drive based on the theory analyses in radial deformation, section stress, fatigue strength and safety factor on the flexspline, which changes the present situation that little research is done on the relationship between the strength of flexspline and its tooth number in open technical literature. The derived mathematical relation enables one to select a suitable tooth number for practical purposes in designing new harmonic drive; it could also be used to verify the fatigue strength in existing harmonic gear assembly.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"244"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66768114","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: 0
Determination of the abrasion of aprons of dams by debris flow 泥石流对坝围磨损的测定
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075832
M. E. Banihabib, M. Iranpoor
{"title":"Determination of the abrasion of aprons of dams by debris flow","authors":"M. E. Banihabib, M. Iranpoor","doi":"10.1504/IJMSI.2015.075832","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075832","url":null,"abstract":"This paper presents an empirical equation for the quantitative determination of the abrasion rate of concrete stilling basins by the impact of sediment in debris flow. The grain size in the experiments is not as big as the grain size of natural debris flow and the independent contribution of sediment impact on abrasion is not reported in previous studies. Therefore, the independent contribution of coarse-grain sediments impact on concrete slab investigated in this paper using two sets of experiments. Linear, power and exponential correlation equations were developed relating abrasion and cumulative potential energy per unit weight of concrete stilling basin using the first set of experiments. The equations were verified using a second set of experiments. The power equation was selected using the mean absolute relative error as the criterion. The study reveals that the reduced effect of water is less than 10% for dimensionless depth smaller than one.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"262"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075832","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66768134","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: 4
Experimental study of hot rolling mill vibration 热轧机振动的实验研究
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075826
Xiao-bin Fan, Y. Zang, Feng Wang, K. Jin
{"title":"Experimental study of hot rolling mill vibration","authors":"Xiao-bin Fan, Y. Zang, Feng Wang, K. Jin","doi":"10.1504/IJMSI.2015.075826","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075826","url":null,"abstract":"In order to study compact strip production (CSP) hot strip mills vibration patterns and vibration source, field test was carried out at F2 (No. 3 Finisher), F3 (No. 4 Finisher) and F4 (No. 4 Finisher) mills which suffer from serious vibrations. The results show that the main driving system of F2 mill produces torsional resonance, which is caused by the gear housing and gear meshing impact. The F3 vibration form is roller horizontal vibration and vertical vibration of 50 Hz, which is caused by stand vertical vibration system first-order resonance derived from curved tooth spindles meshing shock. Roller horizontal vibration has collision, and the test curve top cutting disappears if the gap between the roller and the stand is eliminated. Roller vibration velocity is five times the allowable value of ISO 2372 requirements, and roller vertical vibration amplitude has affected the strip thickness quality target. Mill vibration characteristic parameters of nonlinear dynamics calculations show that the system possesses chaotic behaviours.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"195"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075826","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767949","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: 1
Size effect on heat transfer performance of ZnO/Al2O3 interface materials ZnO/Al2O3界面材料传热性能的尺寸效应
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075828
Li-qiang Zhang, Junchao Li, Chao Wang, Xiaoju Wu, Qiaoya Liu, Chunquan Li
{"title":"Size effect on heat transfer performance of ZnO/Al2O3 interface materials","authors":"Li-qiang Zhang, Junchao Li, Chao Wang, Xiaoju Wu, Qiaoya Liu, Chunquan Li","doi":"10.1504/IJMSI.2015.075828","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075828","url":null,"abstract":"The aim of this paper is to provide a spanscale method to investigate and estimate the interfacial thermal conductivity (ITC) of ZnO/Al2O3; interface from the nanoscale to the microscale situation based on the non-equilibrium molecular dynamic (NEMD) method. Comparing the simulated with the experimental data, a fitting model of the ITC from the nanoscale to microscale is built to evaluate its changing rule. The results show that the ITC increased until bulking materials from the nanoscale to microscale. The scope of size effect area reduced to 30 nm from 600 nm and 330 nm comparing with each pure material. It means that the size effect of pure ZnO or Al2O3 materials can be avoided by compounding with Al2O3 or ZnO materials. It implies a potential method for electronic material design of packaging or micro/nano manufacturing.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"228"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075828","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66767968","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: 0
Effect of sputtering power on nano-mechanical properties of ZnO film 溅射功率对ZnO薄膜纳米力学性能的影响
International Journal of Materials and Structural Integrity Pub Date : 2015-01-01 DOI: 10.1504/IJMSI.2015.075829
Miao Zhang, N. Liao, Pengfei Chen, W. Xue
{"title":"Effect of sputtering power on nano-mechanical properties of ZnO film","authors":"Miao Zhang, N. Liao, Pengfei Chen, W. Xue","doi":"10.1504/IJMSI.2015.075829","DOIUrl":"https://doi.org/10.1504/IJMSI.2015.075829","url":null,"abstract":"In this study, unbalanced magnetron sputtering approach was used to prepare ZnO film by using high-purity ZnO target. Nano-indentation and scratch test were used to study the mechanical properties of ZnO film at different sputtering powers. According to the experimental results, optimums of Young's modulus, surface roughness and adhesion strength are present at an optimal sputtering power.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"9 1","pages":"236"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/IJMSI.2015.075829","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66768064","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: 2
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信