Design and Application of a Reconstruction System for Engineering Equipment Fault Diagnosis

It is difficult to develop the corresponding fault diagnosis system and the software reusability is bad because the engineering equipment types are so many and their performance is diverse.This paper discussed the solution to engineering equipment integrated fault diagnosis system based on component technology,put forward the system model and gave the system frame design process and working principle.The software was designed based on the three-layer hierarchy.It is easy to reuse and maintain,and the operat...     

An Elastic Autonomous Self‐Healing Capacitive Sensor Based on a Dynamic Dual Crosslinked Chemical System

Adopting self‐healing, robust, and stretchable materials is a promising method to enable next‐generation wearable electronic devices, touch screens, and soft robotics. Both elasticity and self‐healing are important qualities for substrate materials as they comprise the majority of device components. However, most autonomous self‐healing materials reported to date have poor elastic properties, i.e., they possess only modest mechanical strength and recoverability. Here, a substrate material designed is reported based on a combination of dynamic metal‐coordinated bonds (β‐diketone–europium interaction) and hydrogen bonds together in a multiphase separated network. Importantly, this material is able to undergo self‐healing and exhibits excellent elasticity. The polymer network forms a microphase‐separated structure and exhibits a high stress at break (≈1.8 MPa) and high fracture strain (≈900%). Additionally, it is observed that the substrate can achieve up to 98% self‐healing efficiency after 48 h at 25 °C, without the need of any external stimuli. A stretchable and self‐healable dielectric layer is fabricated with a dual‐dynamic bonding polymer system and self‐healable conductive layers are created using polymer as a matrix for a silver composite. These materials are employed to prepare capacitive sensors to demonstrate a stretchable and self‐healable touch pad.     

水利枢纽CIMS模式探讨

通过分析水利枢纽的特点，从控制结构和功能结构的角度提出了水利枢纽计算机集成制造系统(CIMS)的体系结构，探讨了水利枢纽CIMS的实现策略，并给出某水利枢纽CIMS的具体实施方案。     

矿井提升绞车卷筒的有限元分析

矿井提升绞车是煤矿生产必不可少的运输设备。矿井提升绞车在工作过程中,卷筒不断地缠绕钢丝绳,钢丝绳上的拉力是一个由大变小的过程,然而钢丝绳对卷筒的压力却是逐渐在增大。针对这种特殊工况,以1t的矿井提升绞车为研究对象,对其卷筒进行了有限元分析,并对主要零件的应力分布以及在工作过程中可能出现的破坏情况进行了分析,以确保矿井提升绞车在井下的安全工作。     

智能监控系统在压装设备中的应用

在工业化生产线上,过盈装配工艺应用广泛,其合理性直接影响产品的性能,而普通压机无法检测装配件是否放置到位和装配件之间的过盈量。文中所述的智能压机通过利用压装设备工作过程中压装力和行程有对应坐标关系的特点,应用智能化的控制系统,解决了普通压机存在的问题,提高了压装产品的质量、降低了产品的废品率。     

煤氧化解聚的研究进展

综述了国内外关于由煤的氧化解聚获得有机化学品的研究进展,介绍了氧化解聚的方法、机理、产物分布及其优缺点等,并探讨了今后的发展趋势。认为由煤的氧化解聚制取高附加值化学品是可行的,是一条值得探索的煤高效利用之路。     

两次淬火对35CrMnSi钢抗拉强度的影响

研究了第一次890～970℃油淬、第二次810～890℃水淬两次淬火及回火工艺对35CrMnSi钢抗拉强度的影响。结果表明,两次淬火工艺可细化钢的组织,提高钢的抗拉强度。对于尺寸为12 mm×40 mm×200 mm的35CrMnSi钢试样,优化的热处理工艺为930℃×19 min油淬,890℃×20 min水淬,然后170℃回火120 min,抗拉强度达1958 MPa。     

网络和面向对象技术在调度系统中的应用

介绍计算机网络与面向对象技术在煤矿生产与安全监测调度系统中的应用，并对系统的组成与功能以及动态静态图形的生成方法作了介绍。     

1-(2-甲硫嘧啶)-2-(4-硝基苯基)乙炔化合物的合成及其二阶非线性光学性能

根据Ｄｅｗａｒ和ＰＯＭ规则设计并采用Ｐｄ（０）及Ｐｄ（Ｉ）催化末端炔键氢和卤素原子进行偶联反应，再与炔铜反应合成的嘧啶环代单炔ＭＳＮＡ化合物，具有较大的分子共轭体系，因其星组碳被电负性更强的氮原子所取代，具有可在蓝紫光波段广泛应用的二阶非线性光学性能。     

冶金企业化验室的组建方法

论述了冶金企业组建化验室的方法,步骤。主要过程包括:确定化验室的任务,设计化验室,建筑化验室,化验室仪器、设备和药品的采购、安装,化验员的培训等。