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tension-tension
相关语句
  拉-拉
     Tension-Tension Fatigue Behavior of 3D-C/SiC Composite at Room Temperature and 1300℃
     3D-C/SiC复合材料在室温和1300℃的拉-拉疲劳行为
短句来源
     Tension-tension Fatigue Damages of 2D-C/SiC Notched Specimens
     2D-C/SiC缺口试样的拉-拉疲劳损伤
短句来源
     Study of Tension-tension Fatigue Properties of Cr4 and Cr5-type Steels
     Cr4、Cr5钢拉-拉疲劳性能研究
短句来源
     Influence of Shot Peening on Tension-Tension Fatigue Properties of TC18 Titanium Alloy
     喷丸对TC18钛合金拉-拉疲劳性能的影响
短句来源
     The shakedown of 23MnNiCrMo54 round-link chain steel was studied under uniaxial tension-tension cyclic stress.
     通过单轴拉-拉交变载荷的安定实验,研究了矿用圆环链钢23MnNiCrMo54的安定状态。
短句来源
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  拉—拉
     Tension-Tension Fatigue Behavior of 3D-C/SiC Composite at Elevated Temperature
     3D-C/SiC的高温拉—拉疲劳性能研究
短句来源
     Variation of Youngs Modulus and Electric Resistance of 3D-C/SiC Composite During Tension-tension Fatigue at Room Temperature
     3D-C/SiC复合材料拉—拉疲劳模量和电阻的变化
短句来源
     TENSION-TENSION FATIGUE LIFE DISTRIBUTION OF UNIDIRECTIONAL GRAPHITE/EPOXY COMPOSITE
     单向碳/环氧复合材料拉—拉疲劳寿命分布
短句来源
     Strength calculation and analysis of character of concrete under compression-tension tension-tension condition
     混凝土在压—拉、拉—拉应力状态下的特性分析及强度计算
短句来源
     In Chapter 2, for T300/QY8911 Carbon/Bismalimide composite laminates, three kinds of basic tests (fatigue of [0]i6 tension-tension, [90] ie tension-tension and [0/90]4S shear-shear) were firstly performed to obtain S-N curves for unidirectional laminates, which were then used as input for the computer codes.
     (2)以碳纤维/树脂基T300/QY8911复合材料层压结构为研究对象,进行了七种多向层压板的拉伸强度和拉—拉疲劳寿命的试验,并用上述算法进行理论预测。
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  “tension-tension”译为未确定词的双语例句
     Influence of shot peening on tension-tension fatigue properties in Ti-10V-2Fe-3Al titanium alloy
     喷丸对Ti-10V-2Fe-3Al钛合金拉拉疲劳性能的影响
短句来源
     The tension-tension fatigue tests have been performed under vacuum at room-temperature, 1100℃, 1300℃, 1500℃ , for stress from 200MPa to 300MPa, ratio of 0. 1 and 0. 5, sinusoidal loading frequency of 20HZ and 60HZ .
     疲劳试验的应力主要范围为200MPa-300MPa,温度为室温、1100℃、1300℃和1500℃,应力比为0.1和0.5,频率为20HZ和60HZ,波形为正弦波。
短句来源
     The changes of surface topography, surface roughness, surface residual stress and compressive residual stress field caused by shot peening and their effects on tension-tension fatigue properties in Ti-10V-2Fe-3Al titanium alloy were studied.
     研究了高强度钛合金Ti 10V 2Fe 3Al表面喷丸强化所产生的表面形貌、表面粗糙度、表面残余应力和表面层残余压应力场变化及喷丸对其拉拉疲劳性能的影响。
短句来源
     The high temperature low cycle fatigue properties have been studied for three Crl5-Ni2S alloys with carbon contents of 0.009, 0.099 and 0.16 (wt. %). Uniaxial tension-tension fatigue test with a holding time for one minute has been conducted.
     本文对含碳0.009、0.099、0.16Wt%的Cr15-Ni25合金高温低周疲劳性能进行了研究,疲劳波形为保持1min单向拉一拉疲劳。
短句来源
     For T300 /QY8911 Carbon/Bismalimide composites, three kinds of t ypical tests (fatigue of 16 tension-tension, 16 tension-tension an d 4s shear-shear) are performed to obtain the S-N curves for unidirect ional laminates, which are used as input for the above procedure.
     针对碳纤维 树脂基T3 0 0 QY891 1复合材料 ,试验测定了三组典型单轴循环应力 ([0 ]1 6拉 拉、[90 ]1 6拉 拉和 [0 90 ]4S剪 剪 )下的S—N曲线。
短句来源
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  tension-tension
In order to remedy this ambiguous definition of failure in this zone for the compression strong materials or in the domain of the tension-tension octant for the tension strog materials an improved version of the EPFS was introduced in this paper.
      
Fatigue crack growth rate studies in tension-tension on IN-744 sheet gave results very comparable to those reported for other steels.
      
The fatigue crack propagation rate (FCPR) in 316L austenitic stainless steel (ASS) and its weldments was investigated, at two loading amplitudes, 7 and 8.5 kN, under tension-tension mode.
      
During tension-tension fatigue studies, a higher specimen temperature was observed at 700 than at 10 Hz.
      
The cyclic compression-compression fatigue life of the metallic glass is about a factor of 10 higher than the cyclic tension-tension fatigue life at the same stress ratio.
      
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Comparafive Investigations of the fracture surfaces of woven Gr/Ep Composite coupons have been made in this stady by using ISI-60 SCANNING ELECTRON MICROSCOPE. Specimens of static and tension-tension fatigue tests at low and high temperatures were chosen for comparison. A primary observation was that during the fatigue tests the visible delimi tations at the edges often occured after 2×104 to 3×104 cycles. The delimitations in room temperature fatigue coupon were more serious than in the static coupon....

Comparafive Investigations of the fracture surfaces of woven Gr/Ep Composite coupons have been made in this stady by using ISI-60 SCANNING ELECTRON MICROSCOPE. Specimens of static and tension-tension fatigue tests at low and high temperatures were chosen for comparison. A primary observation was that during the fatigue tests the visible delimi tations at the edges often occured after 2×104 to 3×104 cycles. The delimitations in room temperature fatigue coupon were more serious than in the static coupon. The most serious delimitations were found in the high temperature fatigue coupon. The cracks in the matrix have the same tendency as well. The breakage surface of single fiber of fatigue coupon was more smooth than the static's.I would like to express my thanks to Prof. S. Hanagud, R. Carlson, J. Craig, Dr. R. Sigman and R.G. Clinton for all the helps they gave me in the work.

本文介绍了用ISI-60扫描电子显微镜对编织石墨/环氧复合材料试片断口表面的研究。试片取自静拉伸及低温和高温下拉——拉载荷下的疲劳试验。在疲劳试验过程中发现:当载荷循环数超过2×1O~4到3×1O~4时,在试片试验段的边缘处有可见的分层现象出现。在显微照片中可以看出:室温疲劳试片中的分层现象较静拉伸试片严重,而高温疲劳试片中的分层最为严重。基体中的微裂纹也有同样的趋势。在高倍放大照片中可以看到:静拉伸断裂的单根纤维的表面明显的比疲劳断裂的纤维断面粗糙。

In this paper tension-tension (R=0.1) fatigue behaviout and residual static tensile strength of unidirectional graphite/epoxy composite were studied by using GB 3354-82 specimens of straight-sided type with long gage length (GB-National Standard, China). The S-N curve and fatigue limit were obtained by means of test method in group and the staircase method. The number of stress cycles, at which the machine stops or the load drops due to the damage or crack occuring in the specimen, is taken as the life...

In this paper tension-tension (R=0.1) fatigue behaviout and residual static tensile strength of unidirectional graphite/epoxy composite were studied by using GB 3354-82 specimens of straight-sided type with long gage length (GB-National Standard, China). The S-N curve and fatigue limit were obtained by means of test method in group and the staircase method. The number of stress cycles, at which the machine stops or the load drops due to the damage or crack occuring in the specimen, is taken as the life of the specimen at that stress level. The S-N curve is a straight line and tends to horizon near the fatigue limit.The fatigue limit is 0.325σb.The failure of specimens resulted from the development of the longitudinal cracks. The appearnce of longitudinal cracks is apparently due to shaer fractures. The shear fractures show that the fatigue behavior obtained bears a close relation with the properties of matrix and interface. The load-carrying capacity of fibers has not been fully utilized, so the S-N curve and fatigue limit obtained correspond to the lower limit of the tension-tension fatigue behaviour of graphite/epoxy unidirectional composite. The specimens with longitudinol cracks were also tested for residual static tensile strength which was found to be 0.7 σb or more. And the curves of load-deformation are straight lines up to 0.5σb then the loads keep increasing and fluctuating until the failure of specimens.

本文采用G8 3354—84规定的大标距直条试样对单向碳/环氧复合材料的拉—拉(R=0.1)疲劳性能和剩余静拉伸强度进行了研究。用成组试验法和升降法测定了S—N曲线和疲劳极限。试样疲劳破坏是由于沿纤维方向(纵向)疲劳裂纹的扩展引起的。试样剩余静拉伸强度大于0.7σ_b。

In order to study the fatigue life distribution of unidirectional graphite/epoxy composite, 50 specimens were tested at same stress level (σmax=48kgf//mm2)· X2 test and check with the graph on the normal probability paper are used. If the logarithmic fatigue life of these 50 specimens as a sample is taken from same population of Gaussian distribution, the theoretical frcquncy function cf this normal population can be obtainedThese data are dawn OH normal probability paper and we find these data are locatednear...

In order to study the fatigue life distribution of unidirectional graphite/epoxy composite, 50 specimens were tested at same stress level (σmax=48kgf//mm2)· X2 test and check with the graph on the normal probability paper are used. If the logarithmic fatigue life of these 50 specimens as a sample is taken from same population of Gaussian distribution, the theoretical frcquncy function cf this normal population can be obtainedThese data are dawn OH normal probability paper and we find these data are locatednear the linelogN= 6.0049+ 0.9330 Upwith linear dependence coefficient r=0.9950. The test data of 50 specimens at same stress levl show that the tension-tension fatigue life distribution of unidirectional graphite/ epoxy composite follows the logarithmic Gaussian distribution.

通过对同一应力水平上50根试件的大子样疲劳试验结果研究表明:单向碳/环氧复合材料拉—拉(R=0.1)疲劳寿命服从对数正态分布。

 
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