采用动电位极化扫描、交流阻抗测试方法和SEM形貌检测等方法测量了三种含缺陷涂层在3.5％(质量分数)NaCl溶液、通入饱和CO2气体条件下的防腐性能.结果表明,3种涂层宏观表面平整均匀,涂层A平均厚度518μm,涂层B为334μm,涂层C为586μm,其中涂层A厚度均一性更好;3种涂层电化学试验后,以涂层B表面损伤最为严重,涂层A次之,涂层C最轻,正好与涂层的厚度变化相对应;缺陷内金属腐蚀产物主要
针对1422mm X80大口径天然气输送管道在建设方面的一系列技术难题,开展了板材成分设计及轧制工艺、钢管焊接及成型工艺、管材关键技术指标、施工工艺及装备等高压大口径输气管道应用技术研究与应用，提高了管线钢管的止裂韧性和屈服强度，为大口径天然气管道建设提供决策支持和技术储备.
采用Gleeble-3500型热模拟试验机研究了工艺参数对厚壁X80热煨弯管母材(Base metal(BM))、焊接热影响(Heat affected zone(HAZ))、焊缝金属(Weld metal(WM))组织和性能的影响,结果表明:母材和热影响的组织和性能随加热温度、冷却速度及回火温度的变化表现出相似的变化规律,而焊缝金属的变化规律则明显不同.而且,焊缝具有高的强度和最低的低温夏比冲击
Taking into account the non-linear nature of the material and load of buried pipe is rarely studied around the world.Taking design strain as reliability evaluation index and considering different prop
Fracture control technology plays a very important role in structural integrity and safe operation of high-pressure,large-diameter gas transmission pipelines.Existing fracture control technology inclu
Steel Development Fundamental aim:Increase strength Increase toughness Improve Weldability Reduce costs Strength/Toughness-Grain size relationship Hall-Petch relationship
汇报提纲1、提高天然气管道设计系数的意义2、较高设计系数在国外天然气管道的应用现状3、国内高强度大口径天然气管道建设现状4、0.8设计系数在西气东输三线的应用5、结论1.提高天然气管道设计系数的意义
This paper proposes a quantum mechanics inspired bidirectional associative memory.We apply fuzzy logic in bidirectional associative memory.We show that the proposed model is satisfying two postulates
In this paper,our aim is to realize natural communication between people and robots based on time information and perceived information.First,we explain the hardware specification of the robot partner
A method for feature extraction of the capnogram for asthma classification is proposed based on wavelet decomposition.The method requires low computational cost and shows adequate performance for a re