LD Side-pumped Intra-cavity Frequency Doubling High Power Green Laser [PDF]
, 2012 全固态激光器具有体积小、重量轻、效率高、光束质量好、稳定性好，维护费用低等优点，随着激光技术的发展，其在工业、军事、医疗和科研等领域中发挥着越来越重要的作用。高功率全固态绿光激光器因其在激光材料加工、激光彩色显示、激光医疗以及激光同位素分离等领域的重要应用而成为研究的热点。本论文主要进行LD侧面泵浦腔内倍频高功率绿光激光器的理论设计和实验研究。主要工作有: (1)利用非线性光学倍频理论对LD侧面泵浦全固态激光器进行了分析，讨论影响腔内倍频转换效率的因素，结合腔内倍频速率方程理论模拟 ...
郑新双
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Expert system for Web-based FEA pre-processor [PDF]
, 2008 为实现大批量定制产品远程分析过程的智能化和知识重用,提出了一种基于知识工程的网络化前处理专家系统。通过对有限元建模和分析过程的标准化、参数化、模板化和知识化的研究,着重论述了专家系统的结构、功能特点和实现策略,其中前处理过程中涉及的专家经验、理论知识和典型分析实例等知识,被分类为分析过程知识和产品结构对象知识,并采用基于逻辑规则和面向对象的知识模型予以表达,从而构建了支撑专家系统的知识库,并给出了基于实例的推理和基于规则的推理相结合的混合推理机制。最后,给出了某数控机床立柱结构的远程分析过程实例 ...
侯亮, 林祖胜, 郑添杰
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Influence of Ultra-low Temperature Thermal Fatigue on Microstructure and Mechanical Property of Z2CND18.12 Austenitic Stainless Steel [PDF]
At present, ice plug technology is often used in the maintenance process of nuclear power plants to isolate part of the main pipeline and use refrigerant such as liquid nitrogen for ultra-low temperature treatment, so that the internal fluid is frozen to
ZHANG Yunhao1, , MA Yan1, ZHANG Tao2, LI Shijiang1, JIANG Xingyu1, LAN Yuning1, ZHU Huiping1, ZHOU Du2, TONG Zhenfeng1,
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Heat Treatment for High Manganese Steel [PDF]
, 2009 本文介绍了入炉温度、升温速度、保温温度、保温时间、冷却速度、摆放位置等热处理工艺参数对高锰钢力学性能的影响。This paper introduces the effect of heat treatment parameters including charging temperature,heating rate,holding temperature,holding time,cooling rate,putting position etc on the mechanical ...
吴霞, 岳学庆, 王华, 董志鑫
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Review of Research on Swirl Cooling Technology of Gas Turbine Blades [PDF]
ObjectivesThe effectiveness of cooling technology directly influences the performance and lifespan of gas turbine blades operating in high-temperature, and high-pressure environments.
LUAN Yong +3 more
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Study on Low-temperature Silicon Wafer Bonding Technology [PDF]
, 2012 低温键合技术与其他键合技术相比，能够避免高温退火对器件造成的缺陷，在制作微机电系统（MEMS）器件、绝缘体上硅器件（SOI）以及压电和声光器件等领域有着广阔的应用前景。针对传统的低温键合技术不适合解决带活动结构晶圆的键合问题，论文提出了湿法活化与等离子体干法活化相结合的低温键合方法，以硅片的低温键合技术为研究对象，从理论研究、工艺研究以及质量评估三方面开展了如下研究： （1）从化学的角度分析了湿法活化、等离子体干法活化以及湿法活化与等离子体干法活化相结合的具体活化机制，并从表面能入手 ...
陶巍
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Spontaneous combustion characteristics of hydrothermal eroded coal in deep mining [PDF]
In the process of deep mining, the temperature of mine water is significantly higher than that of shallow coal seams. The erosion of high-temperature hydrothermal fluids affects the physical and chemical characteristics of coal, which in turn affects its
Daimin HU +5 more
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, 2019 介绍了一种特殊设计的少模光纤及由少模光纤构成的单模光纤-少模光纤-单模光纤(SFS)传感结构。在对轴激发条件下,少模光纤芯子中仅有基模LP01和第一圆对称高阶模LP02传输,且SFS结构的传输光谱在工作波长范围内有一个特征波长。在特征波长附近相邻两个干涉峰间的波长间距达到最大,且在特征波长处干涉仪的输出光强不随波长变化,这使得特征波长在光谱中唯一且容易识别。理论和实验研究了SFS结构传输光谱的特征波长及其两边干涉条纹随轴向应变、温度、弯曲、液体折射率的传感特性,并将SFS结构用于轴向应变、温度、弯曲 ...
苏娟, 董小鹏, 陆晨旭, 雷雪琴
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Deep Peak Shaving Technology for 330 MW Circulating Fluidized Bed Boiler [PDF]
To promote the implementation of the “double carbon” policy and to manage the high volatility of new energy, the current requirements for deep peak shaving of thermal power units are getting higher and higher. Circulating fluidized bed (CFB) boiler units
HUANG Zhong +6 more
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An integrated DIC and CPG investigation of the model-I fracture features for granites after cyclic heating-cooling treatments [PDF]
The thermo-mechanical properties of deep reservoir rocks, especially the damage and failure characteristics under heating-cooling cycles, are of great importance to the stability analysis of well wall and the evaluation of geothermal extraction ...
Gan FENG +5 more
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