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1.
《仪器仪表标准化与计量》2005,(1)
2005年月2月7-18日,IEC/TC65/SC65CJWG10\WG11\WG12\WG13联合工作组会议在意大利CATANIA召开。机械工业仪器仪表综合技术经济研究所(ITEI)和全国工业过程测量和控制标准化技术委员会(SAC/TC124)组团参加了本次会议(梅恪、郑旭、冯冬芹、徐皑冬)。下面分别介绍这四个工作组的会议情况。一、JWG10工作组会议简况 2005年2月7-11日,IEC/SC65C/JWG10会议在意大利CATANIA召开。会议主要对IEC61918第1CD稿进行了讨论,对草案中忽略的内容和相关 相似文献
2.
《仪器仪表标准化与计量》2017,(3)
<正>智能制造核心标委会IEC/TC 65年会(2017)在美国成功召开2017年5月8日-19日,国际电工委员会IEC/TC 65(工业过程测量、控制和自动化技术委员会)2017年会在美国密尔沃基市召开。IEC/TC 65年会为期两周,期间举行了5个工作组(WG),AG(顾问组),4个分技术委员会:SC65A(系统方面)、SC 65B(测量和控制设备)、SC 65C(工业网络)、SC 65E(企业系统中的设备与集成),TC 65全会和自动化论坛。来自中国、德国、法国、奥地利,美国、日本、英国、意大利、芬兰,丹麦、荷兰、加拿大、韩国等14个国家的110余位代表参加了此次会议。作为IEC/TC 65国内对口标委会(SAC/TC 相似文献
3.
《仪器仪表标准化与计量》2018,(6)
正2018年10月15日-26日,IEC(国际电工委员)第82届大会在韩国釜山召开,同期召开了IEC/TC65(工业过程测量、控制和自动化技术委员会)2018年会。IEC/TC65年会为期两周,期间举行了4个工作组会议、AG(顾问组)会议、4个分技术委员会年会(SC65A系统方面、SC65B测量和控制设备、SC65C工业网络、SC65E企业系统中的设备与集成)、TC65全会和自动化论坛。来自中国、德国、法国、 相似文献
4.
IEC/TC中国代表团 《仪器仪表标准化与计量》2005,(1):7-10
2005年月2月7~18日,IEC/TC65/SC65C JWG10\WG11\WG12\WG13联合工作组会议在意大利CATANIA召开。机械工业仪器仪表综合技术经济研究所(ITEI)和全国工业过程测量和控制标准化技术委员会(SAC/TC124)组团参加了本次会议(梅恪、郑旭、冯冬芹、徐皑冬)。下面分别介绍这四个工作组的会议情况。 相似文献
5.
《仪器仪表标准化与计量》2004,(6)
IEC/TC65/SC65CWG10、WG11、WG12、WG13四个工作组会议于2004年10月7日至14日在美国休斯顿召开。中国代表团一行五人参加了会议,其中机械工业仪器仪表综合技术经济研究所冯晓升同志参加了WG10和WG12会议,重庆邮电学院王平、王浩同志参加了WG13会议,机械工业仪器仪表综合技 相似文献
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《仪器仪表标准化与计量》2017,(5)
<正>2017年10月4-6日,IEC/SC65B/WG6(系统设备性能测试和评估方法)工作组会议在意大利伊塞奥召开,来自多个国家的13名专家出席会议。机械工业仪器仪表综合技术经济研究所(仪综所)陈斌博士作为工作组成员参加了会议。会上,首先由工作组召集人介绍工作组情况、现有工作的进展以及工作展望。随后与会专家对美国密尔沃基召开的会议情 相似文献
8.
《仪器仪表标准化与计量》2004,(6):3-7
IEC/TC65/SC65C WG10、WG1l、WG12、WG13四个工作组会议于2004年10月7日至14日在美国休斯顿召开。中国代表团一行五人参加了会议,其中机械工业仪器仪表综合技术经济研究所冯晓升同志参加了WG10和WG12会议,重庆邮电学院王平、王浩同志参加了WG13会议,机械工业仪器仪表综合技术经济研究所梅恪同志和浙大中控冯冬芹同志参加了WG11会议。会前的5日、6日两天参观了ISA仪表展会。 相似文献
9.
《仪器仪表标准化与计量》2015,(3):5
<正>国际标准化组织ISO/TC30(封闭管道中的流体流量的测量)2015年度会议于2015年4月27日~5月1日在英国伦敦召开。此次同期召开了SC5/WG5(传导液体的电磁流量测量)工作组会议、SC2/WG11(利用压差装置法测量流体流量)工作组会议、SC2/WG16(使用锥形流量计的测量)工作组会议,以及SC2(压差装置分委会)、SC5(速度与质量方法分委会)、TC30年度会议。 相似文献
10.
《仪器仪表标准化与计量》2009,(6):2-2
(IEC/SC65C/WG15中国代表团) 2009年10月29日~30日,机械工业仪器仪表综合技术经济研究所(ITEI)潘长清工程师作为中国代表团代表赴瑞士参加了IEC/SC65C/WG15工作组会议.本次会议的主要内容为:总结IEC 62439 FDISEd2的工作情况,讨论韩国代表团提出的HA提案(RRP). 相似文献
11.
J. Campa-Molina† O. Blanco† A. Correa-Gomez M. Czank‡ & A. G. Castellanos-Guzman 《Journal of microscopy》2002,208(3):201-211
The domain structures of Zn3B7O13Cl, Zn3B7O13Br and Zn3B7O13I boracite single crystals were studied by means of polarized light in conjunction with electron microscopy. Single crystals of the three compositions were grown by chemical transport reactions in closed quartz ampoules, at a temperature of 900 °C and were examined by polarizing optical microscopy (PLM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). For both PLM and SEM, the same as‐grown samples were used without having to resort to metallization of the crystal faces. For TEM the single crystals were crushed and mounted on holey carbon films. Comparative electron microscope images were useful for revealing the domain structure of these ferroelectric/ferroelastic materials previously observed between the crossed polars of an optical microscope. X‐ray diffraction analysis of the pulverized crystals was performed for this triad of halogen boracites containing zinc as a common metal. 相似文献
12.
Stress intensity factors for pairs of diametrically opposite radial cracks on the inside of a jacketed pressurized hole in a thick cylinder have been calculated by using finite element technique. Burst tests on thick cylinder rock samples under above conditions have been performed and the KIC values for Antrim Shale and Limestone determined. The method is very convenient for rocks whose samples are often available in form of cylindrical bars drawn as cores from underground drilling. 相似文献
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基于太赫兹光谱的人参和西洋参鉴别 总被引:1,自引:0,他引:1
为了快速区分人参和西洋参,依据两者所含的人参皂苷在太赫兹波段具有不同指纹光谱,提出了一种基于人参皂苷的太赫兹光谱鉴别人参和西洋参的方法。采用MATLAB软件识别人参和西洋参的太赫兹光谱,同时根据太赫兹光谱特征并通过标准的主成分分析(PCA)区分出人参、西洋参。实验结果表明,基于太赫兹光谱的主成分分析可精确区分出人参、西洋参,并且还可以应用于其他类似物质的区分中。 相似文献
15.
R.B. Zipin 《Precision Engineering》1990,12(2)
European manufacturers have proposed a set of surface roughness parameters based on an examination of the variation in slope of the bearing ratio curve of a surface profile. It is shown, that the proposed procedure provides no useful information, and indeed is misleading, since the bearing ratio curve of even a normally-distributed random surface profile exhibits the expected variation in slope when plotted on rectangular coordinates. On the other hand, the desired information is readily obtained by a similar examination of the cumulative height distribution of a surface profile (the unity complement of the bearing ratio) when it is plotted on normal probability coordinates. 相似文献
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An Al86 Mn3 Be11 alloy cast into copper mould was subjected to metallographic investigation. The as-cast microstructure consisted of a quasicrystalline icosahedral phase (i-phase), Be4 AlMn phase and, occasionally, a hexagonal phase. Al-rich solid solution represented the dominant phase. The chemical compositions of phases were determined using AES. The composition of the Be4 AlMn slightly deviated from the stoichiometric composition, whereas the composition of the i-phase was approximately Al52 Mn18 Be30 , containing an appreciable amount of Be. The average composition of the hexagonal phase was Al66 Mn21 Be13 . Deep etching and particle extraction provided a deep insight into the three-dimensional morphology of the i-phase and the hexagonal phase, whereas Be4 AlMn was slightly attacked by the etchant. The i-phase was present predominantly in the form of dendrites and a rodlike eutectic phase. The hexagonal phase was primarily in the form of hexagonal platelets, whereas Be4 AlMn was rather irregular in shape. The morphology of the i-phase can be explained by predominant growth in 3-fold directions and the lowest energy of the 5-fold planes, leading to the faceting and adopting a pentagonal dodecahedron shape. The brightnesses of phases in the backscattered electron images were rationalized by determining their backscattering coefficients. TEM investigation showed considerable phason strain in the i-phase, and the polycrystalline nature of the Be4 AlMn phase. 相似文献
18.
Ali Asadi Ali Sadough Vanini Amin Jabbari 《Journal of Mechanical Science and Technology》2011,25(9):2179-2184
Lightweight laminated composites containing a ceramic front layer and a metallic backing layer were used in order to protect
people, moving equipment, and mobile vehicles from high velocity impact and the increased mobility of mobile vehicles. In
this study, by adding10 vol% SiC and 500 ppm MgO nanoscale particles on the microstructure of Al
2
O
3 matrix and applying optimum sintering conditions, ceramic performance against high-speed projectile impact was improved.
To perform this investigation, a number of target samples with two different types of front layers (alumina and Al
2
O
3-SiC-MgO nanocomposite ceramic) were produced. Impact tests were conducted on these samples using 7.62 mm projectiles with a velocity
of 820 ± 15 m/s. The amount of bulge and bending of the backing layer caused by impact tests was measured. The results of
the impact tests on the samples made of Al
2
O
3-SiC-MgO nanocomposite ceramics and alumina were also compared and analyzed. The results indicate that the substitution of Al
2
O
3-SiC-MgO ceramic layer — which is proffered in this paper — instead of pure alumina ceramic layer, decreases the areal-density of
the samples by at least 30% and improves mechanical properties by about a 60% increase in flexural strength and 100% growth
of the energy distribution factor, which impressively increases impact energy absorption. 相似文献
19.
Crack/particle interactions in alumina/silicon carbide nanocomposites have been investigated by scanning electron microscopy and transmission electron microscopy, with cracks induced by Vickers microindentation. Intergranular cracks are frequently deflected into grains by SiC particles on grain boundaries inclined to the average direction of crack propagation. This mechanism is proposed to explain the change in the fracture mode from intergranular fracture for monolithic alumina to predominantly transgranular fracture for the nanocomposites. Neither stress-induced microcracking around SiC particles nor significant crack deflection by intragranular particles was found to occur in the nanocomposites. It is argued that an addition of nanoparticles may not be a promising approach for increasing the toughness of alumina. 相似文献
20.
I. I. Smolyaninov H. Y. Liang C. H. Lee C. C. Davis V. Nagarajan† & R. Ramesh† 《Journal of microscopy》2001,202(1):250-254
Near-field optical second harmonic microscopy has been applied to imaging of the c/a/c/a polydomain structure of epitaxial PbZr x Ti1– x O3 thin films in the 0 < x < 0.4 range. Comparison of the near-field optical images and the results of atomic force microscopy and X-ray diffraction studies show that an optical resolution of the order of 100 nm is achieved. Symmetry properties of the near-field second harmonic signal allow us to obtain good optical contrast between the local second harmonic generation in c- and a-domains. Experimentally measured near-field second harmonic images have been compared with the results of theoretical calculations. Good agreement between theory and experiment is demonstrated. 相似文献