查询词典 tensile strength

New ideas and methods in the paper:1 The formulas on perforated casing collapse strength were deducted, which offereda convenient method to analyze the relationship between casing collapse strength and perforation;2 The stress and displacement formulas on the system of casing, cement anddeformation under the non-uniform load were deducted, which offered the theoretical found for designing optimally casing string;3 The relationship between structure in-situ field of whole oil field and casing failurewere studied, which offered the scheme for the prediction of casing failure. The process of study in the paper:1 For simulating the relationship between the structure in-situ field and the casingfailure in the oil-deformation, the tests of the uniaxial tensile, compress, tnaxial compress and dilatability were made on the samples of the drill cores from deformation of casing failure position in Yuejing II oil field.

本文的主要创新： 1推导出了射孔套管抗挤强度的解析式，为分析射孔与套管强度的变化关系提供了简便的方法； 2推导出了非均匀地层载荷作用下套管、水泥环和地层组合体的应力和位移解析式，并非均匀作用下套管柱优化设计提供了理论依据； 3研究整个油田区块构造应力场与套管损坏关系，为预测套管损坏提供了可行方案；本文的研究过程如下： 1为模拟构造应力场与油层段套管损坏关系，做了大量的岩石单轴抗拉、单轴抗压、三轴试验以及岩石遇水膨胀试验，获得了研究区块岩石的弹性模量、泊松比、内聚力、内摩擦角以及岩石的线膨胀系数，这此数据为本文研究油层段套管损坏机理研究的理论分析和有限元法提供了实验数据。

In the meantime, a new relation between the coefficient of variation for a normal variate and its sample size is achieved, where the probability to make mistake Ⅱ is considered 5 The probability distribution of fatigue strength at given life under large sample size determined by a new method is found to follow the log-normal distribution and normal distribution, and a new method are developed to estimate the characteristic parameters of probability distribution of fatigue strength from the probability distribution of traditional tensile properties.

根据P-S-N曲线的要求，采用概率统计方法，导出了考虑犯Ⅱ类错误的概率时获取给定精度P-S-N曲线所需的最少子样容量，引入了不同方法获取的P-S-N曲线结果是否趋同的判别标准，得到了P-S-N曲线的寿命求解法和系数求解法获得趋同结果的条件。 5）研究了大子样条件下指定寿命时疲劳强度的概率分布，并提出了根据拉伸性能的分布估算材料疲劳强度概率分布参数的一种方法。

The strength and toughness of the nanocomposites are improved because of the addition of anao-Zno. The volume resistance strength and toughness of the nanocomposites are improved because of the addition of nano-ZnO. The volume resistance coefficient is decreased 8×10 times, surface resistance coefficient is decreased 5.7×10^4 times, and the friction coefficient is decreased 29% by adding nano-ZnO. The friction, wear properties, and the antistatic property of MC Nylon 6/ZnO nanocomposite are better obviously than MC Nylon 6. The macro stress of MC Nylon 6 structure is changed by the tensile test so that the preferred orientation of crystal surface (002+202) is more obvious.

纳米ZnO的加入起到同时增强增韧的作用；使体积电阻系数降了8×10^4倍、表面电阻系数降了5.7×10^4倍、摩擦系数降低了29%，MC尼龙6/纳米ZnO复合材料摩擦磨损性能和抗静电性能明显优于MC尼龙6；经过力学拉伸试验的破坏，引起MC尼龙6结构发生宏观应力变化，造成（002+202晶面）产生明显的择优取向。

The results showed that when 20% of BKP treated by PFI mill for 80 thousand revolutions added into HYP, tensile index of the hand sheet increased by 103%; z direction strength increased by 80%, and when 20% of BKP treated by PFI mill for 50 thousand revolutions added into HYP, tear index of the hand sheet increased by 120%. It indicated that BKP with rich fibrils can obviously improve the mechanical strength of HYP.

结果表明，在HYP中添加20%的经PFI磨8万转处理的BKP使手抄片的抗张指数提高了103%、z向强度提高了80%，添加20%的经PFI磨5万转处理的BKP使手抄片撕裂指数提高了120%，说明高度细纤维化的BKP能明显改善HYP的机械强度。

The compressive strength, anti-tensile and rotation strength of the scaffolds were measured by almighty vitodynamics machine. 2、To make biologic safe test of nano-zirconia calcium phosphate scaffolds in vivo and vitro with polyethylene as a negative control and phenylic alcohol of 6.4% as positive control, include cell toxicity test, systemic acute toxic test, hemolysis test, the cytotoxicity and histocompatibility of the scaffolds were evaluated to offer valuable theoretical evidence for clinical safe application.

万能生物力学机测定骨支架的压缩强度、抗拉伸强度和旋转强度。2、以聚乙烯做阴性参照材料、6.4%苯酚溶液做阳性对照材料，对纳米氧化锆/磷酸钙骨支架进行了体内、外生物安全性试验研究，包括细胞毒性试验、全身急性毒性试验、溶血试验，评价其细胞毒性、组织相容性，为确保该材料临床应用的安全性提供有价值的理论依据。

The tensile tests show that the yielding strength and fracture strength increase with increasing Co content. The fracture mechanism of martensite phase is transcrystalline fracture, and the γ phase is gliding fracture, it proves that the γ phase improves the toughness of experimental alloys

断口观察发现，基体相为解理断裂，小尺寸的γ相被裂纹绕过或被整体拔出，大尺寸的γ相被拉长、撕裂或整体拔出，说明γ相有利于改善合金韧性，但增韧效果受到γ相尺寸的影响

In this paper, the mechanical property parameters of the adhesive were gotten by tensile test on standard sample at first. Then the single lap joint test of tensile shearing strength was designed and the loading-displacement curve including the cracking load was obtained. The experimental research provides the certain basis for the further research and application on the automotive structural adhesive.

本文首先制作了结构胶粘剂标准试样，通过拉伸实验测试了胶粘剂的相关力学性能参数；然后设计了单搭接拉伸剪切强度试验，测得该类型试件的载荷－位移曲线以及破坏载荷等重要数据，为今后车用结构胶合技术的进一步研究应用提供一定的实验依据。

Joint-seal Glue Injector is a small device which is used to inject the glue into the concrete joint with the pressure, adopting the glue-injection piston and spring structure design, without the glue bag, fixing the piston in the front the push rod, installing the high strength spring onto the push rod, after release the lock latch of the push rod, pushing the piston and the push rod forward with the tensile force of the high strength spring, so pressing all of the glue liquid from the glue-injection cylinder into the joint.

灌缝胶注胶器是一种对混凝土裂缝持压注胶的小型设备，采用注胶活塞和弹簧的灌缝胶注胶器结构的改进，舍去了胶囊，通过在推杆前端固定注胶活塞，在推杆上套置高强度弹簧，在松开推杆的锁扣后，利用高强度弹簧的张力，可推动注胶活塞连同推杆前移，将注胶筒内的胶液完全压出注入建筑结构的裂缝中，价格低廉，性价比高，操作方便，施工安全，清洗方便，可多次重复使用。

A series of spot welding technology and joint tensile-shear tests for uncoated low carbon, electroplated and two kinds of hot dipped zinc-coated steels were made to improve the quality of spot welding joint for zinc-coated steels. The test results were analyzed with computer regressive method. The effects of welding current or time on nugget diameter or joint tensile-shear strength and critical curves in splash generation for spot welding were obtained.

摘 要：为提高镀锌钢板点焊接头的质量，对普通冷轧钢板、电镀锌钢板和两种镀锌层厚度不同的热镀锌钢板进行了一组点焊工艺及接点强度试验，并对试验结果进行了计算机回归分析，分别得出了这几种材料在不同的焊接电流、焊接时间下的点焊熔核直径或接头拉剪强度变化曲线以及点焊飞溅临界曲线。

Result shows that: Beating can make the fiber internal fibrillating which the fiber flexibility is increased; the tensile and Z-Tensile and burst strength of the kenaf core CMP are increased nolineary.

打浆的机械作用能使纤维细胞壁发生层间分离，导致纤维柔软度发生剧变，该点称之为层间分离点，它的大小反映了纤维内部细纤维化的难易程度。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失