混合炸药中TNT与HNS的分离和测定

用反相高效液相色谱法(RP—HPLC)快速分离和定量测定混合炸药中高含量的梯恩梯(TNT)和低含量的六硝基芪(HNS),其平均回收率TNT为99.06±1.55％,HNS为97.43±2.70％。该法也可配合产品检验。     

Ti/Cu/不锈钢爆炸复合界面层的电子显微组织

采用扫描电镜(SEM)与电子探针(EPMA)研究了Ti(合金)/Cu/不锈钢(S.S)爆炸复合界面层的电子显微组织特征,分析了界面层成分再分布规律及化合物的形成。结果表明,CU/S.S界面层具有明显的爆炸焊接波状组织,波长约200μm。Ti/Cu界面层呈锯齿波状,比较细小,波长仅30～40μm。在中间过渡层Cu,观察到大量的应力应变流线,显示爆炸复合过程冲击波流动特征。SEM照片及EPMA合析结果表明:在高温、高压、快速爆炸焊接过程中存在着复杂的冶金物理反应,形成多种反应产物。界面层除发生塑性形变外,还存在相互扩散,熔化和回复再结晶。     

陶瓷粉末平面爆炸烧结裂纹的形成

对ＳｉＣ粉末的爆炸绕结过程进行了数值模拟，计算了粉末中入射冲击波和反射冲击波压力；与实验测得的压力峰值吻合良好，从计算结果出发，讨论了ＳｉＣ粉末烧结中裂纹形成的机制。     

55CrSiA与JIS G3566—77油淬火弹簧钢丝的比较分析

在系统地对同规格的５５ＣｒＳｉＡ与ＪＩＳ Ｇ３５６６－７７油淬火钢丝的成分、组织、残留元素及力学性能进行了复查，并按相同工艺制成ＦＭ１４７发动机气阀弹簧做了比较试验后发现：该种弹簧钢丝与日本弹簧钢丝在质量上略有差距。     

废发射药资源化新途径——制备粉状炸药研究

该文从理论上分析废发射药具备炸药的三要素，从理论和实验两方面论述了用废发射药制备粉状炸药时，必须降低废药的粒度，从而达到提高炸药爆轰感度和传爆能力。在实验研究的基础上，提出了直接利用废药粉、废药粉与药粒级配、废药粉与氧化剂级配作粉状炸药的３条途径。文章的结论认为利用废发射药制备粉状炸药是一个资源化利用废药资源的方向。     

圆形截面混凝土偏心受压构件极限承载力的理论分析

根据混凝土材料非线性的应力—应变关系,采用非线性分析的方法,对圆形截面的混凝土偏心受压构件的极限承载力做了理论计算,建立了荷载偏心对承载力影响的折减系数计算方法,为简化计算方法提供了理论依据     

Viscoelastic characterization of compacted pharmaceutical excipient materials by analysis of frequency-dependent mechanical relaxation processes

A newly developed method for determining the frequency-dependent complex Young's modulus was employed to analyze the mechanical response of compacted microcrystalline cellulose, sorbitol, ethyl cellulose and starch for frequencies up to 20 kHz. A Debye-like relaxation was observed in all the studied pharmaceutical excipient materials and a comparison with corresponding dielectric spectroscopy data was made. The location in frequency of the relaxation peak was shown to correlate to the measured tensile strength of the tablets, and the relaxation was interpreted as the vibrational response of the interparticle hydrogen and van der Waals bindings in the tablets. Further, the measured relaxation strength, holding information about the energy loss involved in the relaxation processes, showed that the weakest material in terms of tensile strength, starch, is the material among the four tested ones that is able to absorb the most energy within its structure when exposed to external perturbations inducing vibrations in the studied frequency range. The results indicate that mechanical relaxation analysis performed over relatively broad frequency ranges should be useful for predicting material properties of importance for the functionality of a material in applications such as, e.g., drug delivery, drug storage and handling, and also for clarifying the origin of hitherto unexplained molecular processes.     

基于AMD和爆破荷载耦合作用下的深凹露天矿边坡失稳研究

AMD是化工(金属)矿边坡体破坏的一种特殊方式,与爆炸应力波共同对边坡体产生作用.新桥深凹露天矿边坡岩体的原位剪切试验、点载荷试验、室内模拟AMD作用试验表明:AMD蚀化后的石英砂岩,岩体层面间的抗剪强度和粘聚力减小的幅值约为13.2%～21.3%;层面间内摩擦角减小幅值在5.0%～7.5%之间;AMD一般影响垂直边坡体内部在60～100 m范围内的岩体力学性质.数值分析表明:(1)AMD对边坡体的作用主要集中在弱化区域内,边坡体的底脚和AMD作用中心区域的剪切应力减少了52.0%和64.7%;(2)随着边坡体高度和距离的增加,远场爆炸应力波对边坡扰动幅值的增加趋势明显,边坡顶部和断层部位的响应突出,损伤效应明显;边坡底脚扰动幅值最小,临空面附近台阶的扰动幅值明显大于边坡体内部;(3)AMD与爆破荷载耦合作用后,边坡体内部的应力分布主要呈现出爆炸应力场的特征,AMD影响区域形成了一个剪切应力弱区.台阶顶部最大剪切应力比单一爆炸应力场增加了1.63倍,形成了一个不稳定的弱区.图12,表3,参14.     

炸药废水的绿色化处理工艺研究

采用超临界水氧化技术处理炸药生产废水，探讨了超临界水氧化降解炸药废水的规律。结果表明：反应温度是影响炸药废水COD去除率的主要因素，在超临界条件下，COD的去除率随着温度的升高而增加。在反应温度为550℃、压力24MPa、反应停留时间为120s的条件下，COD去除率可以达到99．98％以上。     

On the problem of crack system with an elliptic hole

The problem of cracks with an elliptic hole in an infinite plane is investigated. By introducing the fictitious loads on the hole edge and using the Muskhelishvili method, the problem is reduced to solving a system of mixed-type integral equations in which some are Fredholm equations but others Cauchy-type singular ones. A numerical method is suggested and can be used for the treatment of other similar equations. The numerical results for some typical examples are given, showing that the method is really effective.