試樣載荷 的英文怎麼說
中文拼音 [shìyàngzǎihé]
試樣載荷
英文
sample load-
: 36 < kth < 37 mpa / m3 / 2, 42 < kih < 44mpa / m3 / 2, 51 < kc < 52 mpa / m3 / 2 through the sem fractography, it is know that the susceptibility to brittle failure at room temperature is more than below 100 ?. and the susceptibility to brittle failure increase with hydrogen increasing, under the sustained loading, ductile cracking appears. the quantity of brittle cracking is more with crack growth
T44mpa m 『 q , sl lt52mpa in 』 」斷口分析表明,該合金充氫后其室溫時的氫脆敏感性大於100oc時的氫脆敏感性;且隨氫含量升高,氫脆敏感性增加:在恆載荷的作用下,該合金裂二紋開始擴展時顯示的是韌性起裂;隨裂紋增長,試樣脆性斷裂的比例增大。At zero applied load, the crack is closed along the perimeter of the specimen but open in the center.
在施加零載荷處,試樣周邊的裂紋是閉合的,而中心則是張開的。The method for measuring the plane strain fracture toughness klc has been introduce to high polymer bonded explosives ( pbx ) by systematically studying technologies concerning the shape of specimen, the depth and its machining of crack, the loading rate, the measurement of critical fracture load, and the computation of klc, etc. the method has been used to test and study klc of three typical high polymer bonded explosives which are j2, jl, j3 respectively both at normal temperature and unmoral temperature
本文以高聚物粘結炸藥為研究對象,對測試高聚物粘結炸藥的平面應變斷裂韌度所涉及的樣品形狀、裂紋深度及裂紋制備、加載速度、臨界斷裂載荷p _ q的確定及平面應變斷裂韌度k _ ( ic )的計算等方面進行深入研究,建立了較為完善的炸藥平面應變斷裂韌度測試方法。A series of tests were performed on the self - made fretting wear test rig to examine the fretting wear of steels, by taking the wear depth of steel wires as a characterization parameter describing the fretting wear in relation to contact load and fretting time. the results demonstrates that the fretting wear depth increases with the increasing of the contact load and fretting time
結果表明,鋼絲試樣的微動磨損深度隨著接觸載荷和微動時間的增加而呈增長趨勢,但由於接觸面積和接觸應力在微動磨損過程中隨著接觸載荷和微動時間的變化而變化,使磨損深度在不同磨損工況下增長趨勢不同。The result shows that under the effect of repeated impact load, the stress wave produces reflection in the metallurgical junction plane between coating and basal body, and forms stretch wave causing longitudinal split and angle split of coat ; the microcosmic spot pitting and deep layered peeling off occur in coating surface due to stress concentration ; the energy accumulation of impact loading causes rigidity variation and plastic deformation
結果表明:在多沖載荷作用下,應力波在塗層和基體的冶金接合面發生反射,形成拉伸波造成塗層的縱裂和角裂;在塗層表面由於應力集中,塗層表面發生微觀點蝕和深層剝落;沖擊載荷能量的積累,造成塗層試樣硬度變化和塑性變形。The damage parameter versus fatigue life figures, which were plotted based on the stress - strain analysis and test results, could be used to predict the fatigue lives of the composite with different winding angles
根據雙軸載荷條件下管狀試樣的應力-應變分析及雙軸疲勞實驗結果,繪制出了基於臨界平面的多軸損傷參量與疲勞壽命關系圖,可對不同纏繞角的復合材料疲勞壽命進行預測。Third, mensurated the front axle ' s load - time history when truck was running on general tar - paved roads, mountainous roads and the proving ground enhancement roads, second sampled and pretreated to the load - time history with rpc software of mts corporation, acquired the relationship of the frequence of the mean and amplitude load, obtained the zero mean equivalent loads using goodman experiential fatigue equation, acquired the weibull distributing functions of equivalent loads of respective roads
第三,測定了汽車前橋在一般瀝青公路、山區公路和試驗場強化試驗路面的載荷時間歷程。對載荷時間歷程進行了二次采樣和數據預處理。採用雨流計數法得到了各路面的載荷均、幅值的頻次關系,並根據goodman經驗疲勞公式,得到了零均值的等效載荷及相應的頻次。Studies on the fatigue crack propagation rate ( fcpr ) indicate that load ratio ( r ) has a great effect on the fcpr : the greater load ratio is, the higher the fcpr becomes, and the lower kth shows. compared with load ratio, the thickness of the specimen has a lower effect on the fcpr
對鎂合金的疲勞裂紋擴展特性的研究表明:載荷比r對鎂合金az91 , am50裂紋擴展行為具有很大的影響。 r值越大,裂紋擴展速率越高,疲勞門檻值k _ ( th )越小;試樣厚度t對鎂合金az91 、 am50穩態裂紋擴展速率的影響沒有r值那麼明顯。There is a slight drop of the fcpr when the specimen s thickness increases. however, the thickness of the specimen exerts a great influence on kth and fatigue life ( n ) : the thicker specimen is, the higher fatigue life ( n ) becomes, and the greater kth shows. under control of the same conditions, the fcpr of am50 is not so high as that of az91. there are some correlations between load ratio ( r ) and the fatigue surface : when load ratio becomes great, small flat surfaces increase while dimples decrease
試樣厚度增大,穩態裂紋擴展速率略有減小。但是,試樣厚度影響試樣的疲勞壽命和門檻值:試樣越厚,疲勞壽命越長,門檻值越大;在試樣尺寸和加載條件相同的情況下, am50的疲勞裂紋擴展速率較az91小,疲勞壽命則比az91長。載荷比r影響試樣的斷口形貌:載荷比r越大,對應相同k值出的斷口小平面越多,韌窩越少。Corrosion of metals and alloys - stress corrosion testing - preparation and use of uniaxially loaded tension specimens
金屬和合金的腐蝕.應力腐蝕試驗.第4部分:軸向載荷拉伸試樣的制備和使用Corrosion of metals and alloys. stress corrosion testing. part 4 : preparation and use of uniaxially loaded tension specimens
金屬和合金的腐蝕.應力腐蝕試驗.第4部分:單軸載荷拉伸試樣的制備和使用The effect of supporting roller ' s hardness and loads on the roller was investigated by the mean of reasonable wear experiment in laboratory, wear mechanisms of supporting roller was researched and observation of their worn surface by scanning electron microscope
摘要採用試驗室試樣磨損試驗方法,在合理的實驗條件下,考查了支重輪硬度及外加載荷對磨損量的影響,用掃描電鏡觀察試樣磨損表面形貌並分析其磨損機理。In the dry sliding experiments of composites, friction coefficients decrease with the loads. plastic deformation happens in the worn surface where the element of fe is found, so pam microfibrils support part of the load and prevent the further deformation
低速低載時,試樣磨損表面出現塑性變形,在復合材料的磨損表面還發現fe元素的存在,表明pam微纖承受了部分載荷,阻止了基體的粘著轉移,此時磨損機理為磨粒磨損和粘著磨損。The spiral sheet metal carry the lotus test to be apply in the bearing power test of the deep foundation soil and water table following foundation soil extensively because the ability goes into the surface of earth is following the certain depth area curve carry on test, according to the element that the spiral sheet metal carries the lotus test, through contrast with plate load test, the spiral sheet metal carries the lotus test to be applicable to the shallow storey foundation soil equally, the size of the spiral sheet metal time area concentration diagram is not big to the test result influence, the spiral sheet metal carries the bearing power of the lotus test assurance to no longer carry on the depth area curve redress
摘要螺旋板載荷試驗因能旋入地面以下一定深度進行試驗而廣泛應用於深層地基土及地下水位以下地基土的承載力測試,根據螺旋板載荷試驗的原理,經與平板載荷試驗對比,螺旋板載荷試驗同樣適用於淺層地基土,螺旋板面積的大小對試驗成果影響不大,螺旋板載荷試驗確定的承載力不再進行深度修正。Based on a large numbers of model / simulation test of the intermittent cracked rock - like samples, fatigue strength, fatigue deformation and crack appear in preexisting cracks tips, the growth of crack, the pattern of crack coalescence are studied / analysed systemically by means of cyclic load and static load, in the course of the model test, the difference between cyclic load and static load of crack appear in preexisting cracks tips, the growth of crack and the pattern of crack coalescence are observed and analysed
在試驗過程中,觀察並分析了循環加載方式下,預置裂隙端部裂紋萌生、擴展、巖橋貫通模式與靜載方式下的差異;探討了疲勞裂紋萌生、擴展的機理,分析了加載頻率、荷載水平對裂隙試樣疲勞強度、疲勞變形(總變形和不可逆變形)的影響規律。The conclusions have been deduced from the detailed analysis of a set of experimental results as below : 1 ) the formula of tangent young ' s modulus et has been established during the unloading process ; 2 ) the shearing features of the samples are similar to undrained test even though there are draining paths so the possion ratio of the sample is about 0. 5 ; 3 ) unloading paths have little effects on the shearing strength parameters
通過對試驗結果的分析得到: 1 )任一時刻土體的切線彈性模量公式; 2 )卸載情況下盡管存在排水通道,但試樣仍基本上表現為不排水的性狀,按廣義虎克定律得到的泊松比在0 . 5附近; 3 )卸荷應力路徑對土體的強度參數影響不大。The dcb ( double cantilever beam ) met hod to test the interlaminar toughness of fabric - reinforced laminates and the modified compliance calibration method ( mcc ) were adopted in this research. the double cantilever beam ( dcb ) test was executed for stitched laminates to evaluate the interlaminar fracture toughness. the stitch parameters ( stitch line spacing and pitch spacing ) were changed and their effects on interlaminar fracture toughness were examined by means of dcb test by using improved insert type loading fixture
試驗中採用改進的插入型夾具、雙懸臂梁dcb ( doublecantileverbeam )試驗方法,測試了載荷?試樣開口位移曲線,依據改進的柔度梁方法( modifiedcompliancecalibrationmethod ( mcc ) )計算出了各個試樣的層間斷裂韌性( r曲線)及層間斷裂韌性的平均值,闡明了縫合工藝參數與層間斷裂韌性( g _ ( ic ) )間的關系,以拉伸與彎曲強度為約束條件,以層間斷裂韌性值為目標優化了縫合工藝。The ample working area gives optimal access for sample loading, cleanup and trimming
充足的工作區域為試樣載荷、清洗和焊縫提供了最佳的途徑。Experimental study on the multiaxial fatigue behavior of filament - wound glass - fibre / epoxy composite tubes under biaxial tension / torsion loading was presented, and a lot of meaningful experimental data were obtained
摘要採用纏繞成型的玻璃纖維增強聚合物基復合材料管型試樣,對復合材料在拉扭雙軸載荷作用下的多軸疲勞行為進行了實驗研究。The following contents were discussed in detail : ( 1 ) effects of small particle content of the samples on the compaction characteristic of rock - salt ; ( 2 ) the value distributions of compressive strength of nature rock - salt ; ( 3 ) the effects of grain size, dry density and water content on compressive strength ; and ( 4 ) the development regularity of dynamic strain of rock - salt under traffic cyclic loading
主要探討了巖鹽試樣中細粒含量比例對試樣壓實特性的影響規律;天然巖鹽抗壓強度的大小分佈,以及巖鹽抗壓強度與粒徑、干密度、含水量的關系;交通循環荷載作用下,巖鹽的動應變發展情況等。分享友人