比韌度 的英文怎麼說
中文拼音 [bǐrèndù]
比韌度
英文
specific tenacity-
The ratio of the microwave radiation to the x-ray bremsstrahlung radiation is dependent on the density in the emitting region.
微波輻射與X射線韌致輻射的比值與發射區的密度有關。The ratio of the microwave radiation to the x - ray bremsstrahlung radiation is dependent on the density in the emitting region
微波輻射與x射線韌致輻射的比值與發射區的密度有關。Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation
為解釋微合金化50crv鋼強韌化機理,本文通過對不同淬火溫度,回火溫度,回火時間下的力學性能指標的對比及顯微分析,認為微合金元素的細化晶粒,馬氏體的回火分解,殘余奧氏體的轉變,第二相的沉澱析出共同決定了微合金鋼的強韌化情況,特別是由於微合金元素的存在,其細化晶粒及其碳氮化物的沉澱析出,導致鋼的良好的強韌性,並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應,會在硬度曲線中產生明顯的二次硬化現象。Research about ctod and its components 8 ", " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture, which is obtained through experiments, and it is also identical with the result got by peak value line of stress triaxiality. besides, 8 i " was compare with vgc as criterion for initiation of void - mode fracture
對裂紋尖端張開位移ctod及其張開型分量~ 1和剪切型分量~ 11的分析表明,在試件發生韌窩型斷裂時,按照圓弧裂紋中ctod矢量的垂直方向預測的斷裂角與試驗測得的斷裂角符合較好,與三軸度脊線預計的結果也比較一致。Thickness of upper and lower epidermis of leaves, width of xylem and phloem of annual and biennial branches, ratio of late wood to early wood, periderm thickness of biennial branches, and length of xylem ray present decreasing trends with latitude ascending ; while ratio of palisade tissue to spongy tissue, epidermis thickness of annual branches, and cortex thickness of biennial branches show unobvious variations with latitude increasing
葉的上下表皮厚度、 1和2年生枝木質部及韌皮部寬度、晚材早材比值、 2年生枝的周皮厚度、木射線長等均隨緯度升高而呈下降趨勢;而葉的柵欄組織和海綿組織比值、 1年生枝表皮厚度、 2年生皮層厚度等解剖結構隨緯度變化沒有明顯規律。Filling flexibilizer, such as epoxy terminal block, polyurethane ether structure, thiokol and liquid ctbn to the system of expoxy - mannich amide, through the test on shear strength, bounding elasticity modulus and break strength of cured products, the different fuction could be found using different flexibilizers
摘要在環氧酚醛胺體系中使用端環氧基聚氨酯醚、聚硫橡膠、液體丁腈橡膠等活性增韌劑,通過對固化物剪切強度、彎曲彈性模量及斷裂強度的測試對比,可以看出不同增韌劑效果不同。The anti - wearing property of chme steel is 15 percent to 35percent higher than zgmnl3, which is a widely used anti - wearing steel. the reason of the excellent mechanical properties and anti - wearing property of chme steel is that the heat treatment sturcture of chme steel is composed of tempered martensite, bainite, temper troostite, remaining austenite and carbonide
磨面分析表明, chme鋼基體高強度,高硬度、良好的強韌性配合和碳化物硬質點的彌散分佈,磨痕細短淺小,擠塑變形區細小均勻,抵抗沖擊滑動累積塑性疲勞能力強,是其耐磨性比zgmn13高的原因。The fracture toughness values of vermicular graphite cast iron specimen subjected to four different heat treatment methods were tested and compared
摘要比較四種熱處理方法下蠕墨鑄鐵試樣的斷裂韌度。According to the recorded full process fracture curve, the paper calculated and compared the fracture toughness ( kic ), the fracture energy ( gf ) and crack tip opening displacement ( ctod ) of the different strength grade boulder concrete and crushed stone concrete, it is found that the maximal load ( fmax ) and the fracture toughness ( kic ) of boulder concrete and crushed stone concrete increase when the strength of them increases, so does the fracture energy of boulder concrete, but the fracture energy of crushed stone concrete does n ' t obviously increase when it ' s strength increases. the crack tip opening displacement ( ctod ) of all specimens chang less when the strength of concrete increases, so it is concluded that the location of the axle in the ligament of the specimens is relatively stable
根據記錄的全曲線,計算了不同強度等級的卵石混凝土、碎石混凝土的斷裂韌度k _ ( ic ) 、斷裂能g _ f以及裂縫的尖端開口位移ctod ,比較了不同強度等級卵石混凝土及碎石混凝土的斷裂韌度k _ ( ic ) 、斷裂能g _ f以及裂縫的尖端開口位移ctod的關系,發現卵石混凝土、碎石混凝土的荷載峰值fmax 、斷裂韌度k _ ( ic )隨強度增加而增加,卵石混凝土的斷裂能g _ f隨強度增加而呈增加趨勢,碎石混凝土的斷裂能g _ f隨強度增加變化趨勢平直,增勢不明顯。Nonpolar polypropylene has bad compatibility with mmt even after organic modification to mmt. so polypropylene ( pp ) grafting acrylic acid was produced by the suspension grafting method as compatilizer. as pp / mmt nanocomposites prepared from htab modified mmt as concerned, the interlayer spacing of mmt is 4. 61nm, 4. 2nm and 4. 09nm respectively when the mmt content is 1 %, 2 % and 3 %. so, the abtained nanocomposites has intercalated structure
當土含量為2 ,相容劑用量為15時力學性能最好,缺口沖擊強度和拉伸強度分別達到16 . 45kj m ~ 2和35 . 77mpa ,分別比純pp增加了280和4 . 3 ,蒙脫土的加入起到了增韌和增強的雙重作用。The results indicate that the fracture toughness is influenced markedly by the different base structure of vermicular east iron and by the form of graphite ; unlike steel, the fracture toughness of vermicular cast iron increases with the yielding strength, while drops drastically with the increase of ratio of graphite grain length to thickness
試驗結果表明,蠕墨鑄鐵的斷裂韌度受不同基體組織的影響比較明顯;受不同石墨形態的影響顯著,與結構鋼不同,蠕墨鑄鐵的斷裂韌度隨材料的屈服強度增大而增大,隨石墨顆粒的長厚比增加會急劇下降。Making use of many layers composite technique and heat press technique to make artificial skull, through a series of performance testes ( including elongate performance, compress performance, curve performance, concussion performance, lay cut performance, concussion cut performance ), making use of drainage method to calculate its average density, which is 1. 25kg / m3, and combustion method to calculate its content of macromolecule, which is 57. 7 %
利用多層復合技術和模壓技術制備來的人工顱骨復合材料,通過對其一系列性能測試(包括拉伸性能、壓縮性能、彎曲性能、沖擊韌性、層間剪切強度和沖擊剪切強度等) ,證明了該復合材料具有良好的物理機械性能。採用排水法計算復合材料的平均密度為1 . 25kg m ~ 3 ,採用灼燒法計算復合材料的含膠量為57 . 7 ,證明該復合材料比強度較高。Combining the fracture toughness test results of rcc specimens with the existed size effect formula for fracture toughness of common concrete, the suitable size effect formula fur fracture toughness of rcc was gotten on the comparative of results of the computation models
將碾壓混凝土斷裂韌度試驗結果與已有的普通混凝土斷裂韌度尺寸效應公式結合,通過對幾種模型的計算結果的分析比較,得到了碾壓混凝土所適用的斷裂韌度尺寸效應公式。A basic variety of aluminium oxide, white colour its hardness is higher and toughness slightly lower than that of a
剛玉的基本品種,白色,與棕剛玉相比,硬度高、韌性稍低。Tial - based alloys with high specific strength are the most potential high temperature structural materials for aerospace application. however, the application of these materials is hindered by low resistance of damage, low room - temperature ductility and fracture toughness and high crack growth rate
Tial基合金比強度高,是最具潛力的航空、航天用高溫結構材料之一,但因其具有較低的抗損傷能力,較低的室溫塑性、斷裂韌性和高裂紋擴展速率,這些斷裂特性阻礙了這種材料的應用,因而仍有必要研究其斷裂機理。On the assumption that the micro fracture toughness of concrete does not vary with strain rate, the static and dynamic strength of concrete under different confinements can be calculated
在假定混凝土的斷裂韌度不隨加載速率變化的前提下,分析和計算了不同圍壓荷載下的混凝土靜動力強度,並與試驗結果進行比較。The larger molecules also contribute more significantly to strength and toughness in the solid molded product compared to the shorter molecules
對于固體制模產品來講,大的分子量比小的分子量具有更大的強度和韌度。Klc of j3 is higher than j2 and j1 at different temperatures, and this shows the stronger ability of j3 to resist crack expanding. two probations have been tried to explore the reasons concerning the results above, one of which is by analyzing the compositions of the three pbxs above and shows that the stronger ability of j3 to resist crack expanding is probably mainly due to the use of bonder b2, and another is by using scanning electronic microscope sem to observe the fracture face morphologies of the specimens at different temperatures. the quantitative observations strongly support the laws of klc of pbxs changes with temperature is revealed as follows : a
測試了三種高聚物粘結炸藥在不同溫度下的平面應變斷裂韌度k _ ( ic )值,得到了這三種炸藥的平面應變斷裂隨溫度的變化規律: a 、隨著溫度的增加,高聚物粘結炸藥的平面應變斷裂韌度降低; b 、在45以後j2的平面應變斷裂韌度降低最快,在60時已很差,比j1還低,可以認為j2在高溫下的抗裂紋擴展的能力比j1還差; c 、在不同溫度下, j3的平面應變斷裂韌度比j2和j1的均高,表現出相對較強的抗裂紋擴展能力。Experimental research on relationship between impact toughness and impact penetrant specific energy of frozen soil
凍土沖擊韌度與鑿碎比能關系的試驗研究By comparing the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ) of the same strength grade concrete, it is found that the values of the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ), tested by three - point - bending method and wedge - split tensile method approach, so it is proved that the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ) are related to its own properties such as material, specimen size, and crack size, but unrelated to the test - method
通過比較三點彎曲法和楔入劈拉法測定的相同強度等級混凝土的斷裂韌度k _ ( ic ) 、斷裂能g _ f以及裂縫的尖端開口位移ctod ,發現兩種試驗方法測定的斷裂韌度k _ ( ic )斷裂能g _ f以及裂縫的尖端開口位移ctod的數值接近,從而證明混凝土斷裂韌度、斷裂能、 ctod的值僅與材料、試件尺寸、裂縫尺寸等試件自身的性質有關,而與試驗方法無關。分享友人