用光学金相显微镜和扫描电子显微镜对SWRH72A盘条拉拔断裂试样进行一系列检验分析。
A series of examinations and analysis have been made on the ruptured samples of the SWRH72A wire rod by way of optical metalloscope and scanning electron microscope (SEM).
用权函数方法对中心裂纹巴西试样的对径加载作了-复合型断裂分析。
The mixed mode fracture of center cracked Brazilian disk specimen subjected to diametral compression is analysed by weight function method.
但是中厚壁钢管DWTT试验经常产生解理断裂部分塑性变形大的逆向断口，使试样无效。
But for medium thickness pipe DWTT, it usually converse fraction of figure transforming much in break part, and make specimen failure.
提出用边切槽圆盘试样测量岩石动态断裂韧度的实验方法。
An experiment on dynamic rock fracture toughness test using edge-notched disc specimen is presented.
黄麻纤维掺入聚丙烯导致黄麻纤维增强聚丙烯试样的冲击韧性摘要与断裂韧性下降。
The impact toughness and fracture toughness of the composite samples decrease after adding jute fibers when compared to pure polypropylene.
在缺口试样中，解理断裂的临界事件是铁素体晶粒尺寸的裂纹扩展进入基体，不随试样尺寸和宽度变化。
The critical event for cleavage fracture in notched specimens is the propagation of a ferrite grain-sized crack into the matrix, and is independent of specimen sizes and widths.
本文，对混凝土弯曲试样进行了测试，并用四种不同的方法进行了平面应变断裂韧性的计算和比较。
In this paper, the test results of bending concrete specimens are shown, and the vlues of plane-strain fracture toughness, calculated by four different methods, are compared with one another.
提出了断裂韧性测试中必须注意的试样尺寸要求。
The specimen size requirements of determining fracture toughness are also presented.
对试样进行了硬度、拉伸强度、断裂伸长率、热老化等性能试验；对老化后的试样表面进行了SEM表征。
Hardness, tensile strength, breaking elongation ratio and aging property of samples were tested and surface of sample after aging was represented by SEM.
研究表明，在常用的裂纹长度和韧带长度范围内，W型试样在断裂韧度的测量中是合理而可行的。
It is concluded that the W-type specimen is reasonable and feasible the measurement of fracture toughness in the commonly used length range of initial crack and rabbin.
通过改变焊缝夏比冲击试样的缺口取向，研究了缺口位向对多层焊缝金属韧性及断裂过程的影响。
By changing the nolch local ion of Charpy impact test specimens studied the effect of nolch location on toughness and cracking process in multi-layer welds.
通过两种不同尺寸试样的断裂韧性测定，研究试样尺寸因素对球墨铸铁断裂韧性的影响；
The effects of specimen size on fracture toughness have been studied by measurements of two different size samples.
试样寿命主要由裂纹萌生寿命和断裂寿命组成，扩展寿命所占比例较少。
The crack initiation life and the crack fracture life are the main life of the specimen.
用扫描电子显微镜(SEM)观测试样的断裂表面，对产生于若干特殊损伤类型的AE信号进行了鉴别。
The fracture surfaces of the specimens were observed by a scanning electron microscope (SEM). The AE signals were distinguished as being released from (several) special types of damage.
本文利用紧凑试样在拉-剪复合加载下进行了断裂试验。
A compact specimen is put to the fracture test under tension-shear combined loading.
指出对这样的管材做小试样的J积分试验来测试其断裂韧性既方便、合理，又经济。
And points out simultaneously it is convenient, reasonable and economic for the pipe product to be tested for its fracture toughness of J integration with small samples.
裂纹形成后垂直于加载轴方向扩展，试样呈穿晶断裂。
Once initiated, cracks would propagate perpendicularly to the loading direction and the specimens exhibited transgranular fracture.
不同尺寸和宽度的缺口试样的解理断裂主要由正应力判据控制。
The cleavage fracture of the notched specimens with various sizes and widths is mainly controlled by the criterion of normal stress.
冷轧扭钢筋在检测时，试样易在夹具内断裂，其塑性难以精确测定。
When testing, it is more likely for cold-rolled and twisted steel bar to be broken in fixture and so that its plasticity can hardly be precisely measured.
型试样在核反应堆压力容器用材料的断裂韧度测试中具有良好的应用前景。
The W-type specimen has a well prospective application in the measurement of fracture toughness of the materials which are used in the nuclear reactor.
所以本文将介绍平面应变断裂韧度KIC的测试试样、方法及步骤等。
So the method and steps of the testing for the plane fracture toughness K IC are explained.
采用缺口和裂纹两种试样测定合金的断裂韧性；
The fracture toughness of the alloys was measured on single-edge notched beam and cracked beam specimens.
由于试样细观缺陷非均匀性的存在，导致岩石断裂主要由拉伸破坏引起，但拉剪混合破坏仍然存在，并对抗剪强度有较大的影响。
Due to the heterogeneity, rock failure mainly results from tensile damage but shear damage still exists, which has influence on the shear strength.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
钠腐蚀后，两种钨试样的沿晶脆断特征变得更为显著，为沿晶和穿晶混合型脆性断裂。
The brittle morphologies become much more notable, and appear the inter-and trans-granular fracture mode after sodium corrosion at high temperature for both of W-specimens.
紫外光加速老化过程中试样拉伸强度、断裂伸长率随组成、光照时间的变化关系；
The relationships of the tensile strength and elongation at rupture and with composition and lighting duration of PE plastics filled with starch were also discussed.
BT 20钛合金断裂试验表明，CT试样均在裂纹延性启裂并缓慢扩展后，发生脆性失稳断裂。
Fracture test of the BT20 indicates that brittle unstable fracture occurs after ductile crack initiation and slow propagation for all the compact tension (ct) specimens.
切口试样测得的解理断裂应力明显高于光滑试样。
The cleavage facture stress of notched specimen is much higher than that of smooth specimen.
通过对管线钢不同温度的落锤撕裂试验和微观断口分析，研究了DWTT试样断口的分层裂纹及其对断裂的影响。
The delamination crack and its effect on the fracture of pipeline steel were investigated by drop-weight tear test(DWTT)at different temperature and micrograph analysis.
通过对管线钢不同温度的落锤撕裂试验和微观断口分析，研究了DWTT试样断口的分层裂纹及其对断裂的影响。
The delamination crack and its effect on the fracture of pipeline steel were investigated by drop-weight tear test(DWTT)at different temperature and micrograph analysis.
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