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International Journal of Nanomanufacturing最新文献

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Effect of single grit impacts on initiation and propagation of cracks in ultrasonic assisted grinding of ceramics by using SPH method SPH法陶瓷超声辅助磨削中单颗粒冲击对裂纹萌生和扩展的影响
International Journal of Nanomanufacturing Pub Date : 2018-10-04 DOI: 10.1504/IJNM.2018.10016346
Zhiqiang Liang, Meng Tian, Q. Wang, Xibin Wang, Tianfeng Zhou, L. Jiao, Yongbo Wu
{"title":"Effect of single grit impacts on initiation and propagation of cracks in ultrasonic assisted grinding of ceramics by using SPH method","authors":"Zhiqiang Liang, Meng Tian, Q. Wang, Xibin Wang, Tianfeng Zhou, L. Jiao, Yongbo Wu","doi":"10.1504/IJNM.2018.10016346","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10016346","url":null,"abstract":"In order to investigate the material removal mechanism in vertical ultrasonic assisted grinding (VUAG) of ceramics, single-grit impact simulation is performed by using smoothed particle hydrodynamics (SPH) method. The initiation and propagation of cracks in grinding of Al2O3 ceramics are analysed. In this simulation, the grit is modelled as a rectangular pyramid diamond indenter and the process of grit impacting on workpiece under different impact speeds is simulated. The critical depth of initiation and propagation of lateral crack is observed. The results show that within a certain range of impact speed, the critical depth of lateral crack decreases with the increasing of impact speed. This means that the brittle fractures are more prone to occur in VUAG. Considering that the material micro-fracture is the main mode in ceramics material grinding under ordinary processing conditions, the material removal rate in VUAG can be improved. Moreover, by observing the surface topography, it can be found that the surface roughness becomes smaller when the impact speed increases.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"387"},"PeriodicalIF":0.0,"publicationDate":"2018-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49312405","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
Machining position-attitude optimisation in ion beam figuring of high-precision off-axis aspheric surfaces 高精度离轴非球面离子束加工位置-姿态优化
International Journal of Nanomanufacturing Pub Date : 2018-10-04 DOI: 10.1504/IJNM.2018.10016343
Mingjin Xu, Yi-fan Dai, Xuhui Xie, Lin Zhou
{"title":"Machining position-attitude optimisation in ion beam figuring of high-precision off-axis aspheric surfaces","authors":"Mingjin Xu, Yi-fan Dai, Xuhui Xie, Lin Zhou","doi":"10.1504/IJNM.2018.10016343","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10016343","url":null,"abstract":"High-precision off-axis aspheric components are widely applied in various high-performance optical systems. However, the complicated manufacturing features of off-axis aspheric make it difficult to achieve high-precision surface for traditional optical manufacturing methods. Ion beam figuring (IBF) is a non-contact and highly deterministic method for the final precision optical figuring. In this paper, two different machining position-attitude models are discussed, which have great influence on the machining difficulty and figuring accuracy of IBF. The child mirror coordinate position-attitude model (CCPAM), which is based on the robustness of IBF removal function to small disturbance of target distance and incidence angle, can effectively decrease the sag height and incidence angle, thereby reduce the beam errors and machining difficulty. A linear three-axis IBF system is successfully applied for the figuring of a large-aperture parabolic off-axis aspheric mirror based on the CCPAM and its best-fit sphere. With two iterations of 113 min, surface error is down to 7.658 nm RMS (effective aperture 310 mm × 310 mm). The figuring results indicate IBF can realise the rapid fabrication of high-precision off-axis aspheric based on the machining position-attitude optimisation.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"332"},"PeriodicalIF":0.0,"publicationDate":"2018-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41625436","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
Design and simulation of ultrasonic horns in ultrasonic vibration machining 超声振动加工中超声喇叭的设计与仿真
International Journal of Nanomanufacturing Pub Date : 2018-10-04 DOI: 10.1504/IJNM.2018.10012496
Zhong Meipeng, J. Yuan, W. Yao, Chen Zhixiang, Zhongdian Chen
{"title":"Design and simulation of ultrasonic horns in ultrasonic vibration machining","authors":"Zhong Meipeng, J. Yuan, W. Yao, Chen Zhixiang, Zhongdian Chen","doi":"10.1504/IJNM.2018.10012496","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10012496","url":null,"abstract":"Ultrasonic horns are also called ultrasonic shift levers. They magnify ultrasonic vibration amplitude to meet the requirements of ultrasonic machining. To improve the efficiency of ultrasonic grinding, reduce the connecting parts of the lever, and reduce internal stress, the amplitude of the ultrasonic vibration process is defined in this study. The amplitude of the stress and modal simulation was determined using ANSYS was used as the simulation system for ultrasonic horn deformation. The stress and displacement at the end of the ultrasonic horns are the highest; however, the displacement at the node position of the flange is almost zero. The maximum displacement is 14.893 µm, and the minimum displacement is close to zero. Ultrasonic horns in ultrasonic vibration machining meet the requirements of use. It is proved in theory that the performance of the ultrasonic system is reliable and the design is reasonable.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"397"},"PeriodicalIF":0.0,"publicationDate":"2018-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47502492","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
Development of CNC software for single point diamond precision lathe based on UMAC 基于UMAC的单点金刚石精密车床数控软件开发
International Journal of Nanomanufacturing Pub Date : 2018-10-04 DOI: 10.1504/IJNM.2018.10016345
Sun Xuehua, Li Jianqun, Wei Gao, Huang Guoqiang, H. Huang
{"title":"Development of CNC software for single point diamond precision lathe based on UMAC","authors":"Sun Xuehua, Li Jianqun, Wei Gao, Huang Guoqiang, H. Huang","doi":"10.1504/IJNM.2018.10016345","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10016345","url":null,"abstract":"A precise single point diamond turning (SPDT) CNC software is developed on the Windows platform using QT4.8.1 graphical interface development tools, with the calling of the UMAC library function. This paper introduces the hardware design of precise SPDT CNC system, the communication method between QT and UMAC, the design and implement of the main interface of the software, the implement of the basic motion control, the process of each module and the software three-dimensional (3D) simulation of this system. The result of the 3D simulation shows that the design of the system is reasonable and the system is able to achieve good processing results. Such a numerical control system has a certain economic value and prospects for industrial applications.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"361"},"PeriodicalIF":0.0,"publicationDate":"2018-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48874120","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 the preparation and thermal properties of Ag-H 2O nanofluids with different morphology 不同形态Ag-H2O纳米流体的制备及其热性能研究
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014650
Jinkai Li, Wenzhi Wang, Z. Liu
{"title":"Investigation on the preparation and thermal properties of Ag-H 2O nanofluids with different morphology","authors":"Jinkai Li, Wenzhi Wang, Z. Liu","doi":"10.1504/IJNM.2018.10014650","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014650","url":null,"abstract":"The triangular flake and wire shaped silver-water (Ag-H2O) nanofluids with good suspension have been achieved via one-step and two-step method, respectively. The thermal conductivity and viscosity of two kinds of Ag-H2O nanofluids were both higher than the based fluids (H2O). The results showed that the thermal conductivity of the two kinds of Ag-H2O nanofluids increased with the content of Ag nanoparticles and temperature increasing. The rheological behaviours analysis showed that two kinds of Ag-H2O nanofluids observed the Newtonian behaviours whose viscosity were close to the water and increased with Ag incorporation. The thermal conductivity of the triangular flake shaped nanofluids was higher than that of the wire shaped nanofluids in the same mass fraction and temperature while the viscosity was in reverse. The effect mechanism of solid content, temperature and morphology on the thermal property of Ag-H2O nanofluids has been discussed in detail.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"242"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42360346","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
NiO/Ag-nanowire composites with three-dimensional structure for high performance supercapacitor electrodes 用于高性能超级电容器电极的三维结构NiO/Ag纳米线复合材料
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014649
Feng Liu, Guangbin Duan, Zhensong Qiao, Xiaopeng Yang
{"title":"NiO/Ag-nanowire composites with three-dimensional structure for high performance supercapacitor electrodes","authors":"Feng Liu, Guangbin Duan, Zhensong Qiao, Xiaopeng Yang","doi":"10.1504/IJNM.2018.10014649","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014649","url":null,"abstract":"NiO/AgNWs/FTO electrode material with three-dimensional structure is prepared by method of electrochemical deposition. The SEM images of NiO/AgNWs/FTO electrode nanocomposite revealed that the NiO is wrapped onto the surface of AgNWs. Furthermore, the effect of annealing time on the electrochemical properties of the electrode was studied, it shows excellent electrochemical performance and good linear relationship during the charge-discharge process. The NiO/AgNWs/FTO electrode with specific capacitance of 408 F g–1 has been achieved at a current density of 0.85 A g–1 and it has excellent cycling stability with 80% retention over 7,000 cycles at a high current density of 5.5 A g–1 when the annealing time is 60 minutes. It can be widely used in the micro-electronic devices, such as micro supercapacitors and chips of computer.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"232"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48319523","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
Research on the preparation of urchin-like CuO-H2O nanofluids and its application in heat pipe 海胆状CuO-H2O纳米流体的制备及其热管应用研究
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014632
Guangbin Duan, Z. Cao, Qi Chen
{"title":"Research on the preparation of urchin-like CuO-H2O nanofluids and its application in heat pipe","authors":"Guangbin Duan, Z. Cao, Qi Chen","doi":"10.1504/IJNM.2018.10014632","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014632","url":null,"abstract":"In this paper, the urchin-like cupric oxide-water (CuO-H2O) nanofluids has been prepared using two-step method via ultrasonic concussion which the CuO nanoparticles are uniformly dispersed in deionised water (DI water), and the urchin-like CuO nanoparticles has been obtained via hydrothermal method. The structural properties of CuO nanoparticles are characterised via XRD and SEM analysis, indicating that the nanoparticles have uniform size and good dispersibility. The thermal conductivity and the surface tension of the urchin-like CuO-H2O nanofluids have been studied in detail. The thermal conductivity and surface tension of the urchin-like CuO-H2O nanofluids are both higher than the based fluids, and they increased with the mass fraction increasing. The heat transfer performance of heat pipe using urchin-like CuO nanofluids are experimentally measured on the condition of air cooling. The results show that the start-up time of the heat pipes using nanofluids are greatly lower than that of DI water, and reduce with the mass fraction increasing. The start-up temperature rise of heat pipe becomes larger than that of the heat pipe filled with DI water, and increased with the mass fraction increasing. The utilisation of nanofluids as working medium can enhance the heat transfer performance of the heat pipe.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"195"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47792066","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
Progressive failure analysis of Z-pinned composite laminates under tension loading Z钉扎复合材料层合板在拉伸载荷作用下的渐进失效分析
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014652
Xie Shunli, Zhang Caili, Z. Chunli, Cai Xin
{"title":"Progressive failure analysis of Z-pinned composite laminates under tension loading","authors":"Xie Shunli, Zhang Caili, Z. Chunli, Cai Xin","doi":"10.1504/IJNM.2018.10014652","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014652","url":null,"abstract":"Based on micromechanical characters of Z-pinned composite laminate, a finite element model is established to predict progressive failure properties of Z-pinned composite laminate under tension loading. For Z-pinned composite laminates, four failure modes: matrix cracking, matrix compressive failure, fibre breakage and fibre kinking are included in the present model. The calculated failure strength is compared with those obtained from experiments and other model. Failure mode pictures and stress-strain curves under tension load are obtained. The results indicate fibre breakage due to the matrix cracking is the main failure mode in Z-pinned carbon/epoxy composites under tension.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"279"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48273653","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
Study on the preparation and properties of puffing glutinous rice starch 膨化糯米淀粉的制备及性能研究
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014648
Jing Zhang, Kai-Min Yang, G. Zhai
{"title":"Study on the preparation and properties of puffing glutinous rice starch","authors":"Jing Zhang, Kai-Min Yang, G. Zhai","doi":"10.1504/IJNM.2018.10014648","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014648","url":null,"abstract":"The puffing glutinous rice starch (PGRS) could be obtained by adding glutinous rice starch (GRS) with the moisture content of 21% into the bulking machine and expanding at 225°C and under 0.75 MPa. The gelatinised GRS had increased adhesive strength. Compared with gelatinisation by heating and adding alkali, gelatinisation by puffing was easier to control and had a higher degree of starch gelation. Thermogravimetry (TG) and differential thermogravimetry (DTG) showed that PGRS had improved thermal stability. The starch granule was disintegrated after puffing and therefore more hydrophilic hydroxyls were exposed. The PGRS had increased water-solubility, which was shown in IR spectrometry with a broad and strengthened peak of O-H stretching vibration. Scanning electron micrograph (SEM) found that the PGRS granules were shaped in rough surface, which would have a strong affinity for water. Therefore, it might be widely applied in the adhesive and pharmaceutical industries.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"219"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46257368","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
In situ nanofibrillar reinforced biodegradable composites based on thermoplastic poly (vinyl alcohol)/poly (lactic acid) 基于热塑性聚乙烯醇/乳酸的原位纳米纤维增强生物可降解复合材料
International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI: 10.1504/IJNM.2018.10014653
Zheng Guo, Yuerong Ba, Dong Liu, Wei-Ying Pan
{"title":"In situ nanofibrillar reinforced biodegradable composites based on thermoplastic poly (vinyl alcohol)/poly (lactic acid)","authors":"Zheng Guo, Yuerong Ba, Dong Liu, Wei-Ying Pan","doi":"10.1504/IJNM.2018.10014653","DOIUrl":"https://doi.org/10.1504/IJNM.2018.10014653","url":null,"abstract":"In situ nanofibrillar reinforced blends with thermoplastic poly (vinyl alcohol) (TPVA) as matrix and poly (lactic acid) (PLA) as dispersed fibrils were successfully prepared by a simple extrusion-stretching process. The microstructure and mechanical properties of the melt-processed TPVA/PLA composites were characterised by Fourier transform infrared spectra, thermal gravimetric analysis, scanning electron microscopy and tensile tests. The results indicated that there are hydrogen bonding between TPVA and PLA which enhance PLA dispersion as well as the interfacial adhesion with TPVA matrix. PLA content was varied from 10 to 30 wt. % resulting in reinforced TPVA matrices with fibrils of 78~150 nm. Compared with TPVA, TPVA/PLA composites exhibit remarkable improvement in mechanical properties and thermal stability.","PeriodicalId":14170,"journal":{"name":"International Journal of Nanomanufacturing","volume":"14 1","pages":"291"},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46377546","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
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