strength degradation 中文意思是什麼

strength degradation 解釋
強度下降
  • strength : n. 1. 力，力量，體力。2. 強度，濃度；長處；（要塞等的）抵抗力。3. 實力；兵力；全體人數，額定人數，編制。4. 筆力；文勢。5. （證券等的）市價堅挺。6. 〈美俚〉（可能有的）利潤。
  • degradation : n. 1. 降級；免職。2. 退化；墮落。3. 【地質學；地理學】（地表的）剝蝕。4. 【化學】降解，遞降分解（作用）。5. 【物理學】（能的）退降。
  1. The changes in molecular weight, mass, mechanical strength, microstructure of fibers and ph value of the buffer solution with time in vitro had been studied. the study shows that degradation mechanism of pdlla / ha compound fiber was indicative of an autocatalysis process and simple noumenon hydrolysis

    通過對試樣的性能測試和形貌觀察，研究了pdlla ha復合纖維在降解過程中其分子量、重量和力學性能以及緩沖溶液ph值等一系列參數的變化規律，並探討了復合纖維的降解機理。
  2. 2. there were statistically differences between the groups in acidity and compressive strength changing at the first 6 weeks after degradation test, mass loss and intrinsic viscosity changed significantly in whole period, volume contract happened after the 2nd week ( p < 0. 05 ). 3. after modified with alginate calcium, the scaffolds have the much higher hydrophilic ability, water uptake reached 50 - 60 % ( v / v ) from 0. 5 to 24 hours, no significant difference found between the inner groups

    經過藻酸鈣改性后的支架親水性能得到良好改善，體積含水量在24小時內保持在5o朋之間，區組、組內比較無顯著性差異中勸刀5 ） ；酒精處理后吸水率達到個12之間，顯著高於對照組的2 10 ，區組和組內比較均存在顯著性差異（卜
  3. The damage introduced by single and 5 repeated thermal shocks ( water - quench experiments ) was characterized by degradation of flexural strength in three - point bending

    單次和5次重復熱震（水淬試驗）后經三點抗彎測試來觀察材料抗彎強度的衰減情況。
  4. By low - cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. we study the loading characteristic values ; the property of hysteretic curve and skeleton - frame curves ; the ductility property and stiffness degradation. lastly, based the data got from the test, this paper analyses and value the seismic behavior of every members

    在試驗基礎上，研究了軸心受壓構件的承載力計算和穩定問題；研究了低周反復水平加載條件下，彎剪構件和整體空心墻板的強度、變形、能量特性；軸壓構件的荷載特徵值；彎剪構件和整體空心墻板的滯回曲線、骨架曲線、延性等參數；從強度、變形和能耗等方面判別和鑒定各構件的抗震性能，對各個構件給出了試驗的結論、評價。
  5. The water soluble pva fiber, as a kind of vinylon fiber, is a newly developed environmental protection fiber. it has unique specific property that it is soluble in hot water below 93 and it has high strength which is 1. 5 to 3 times as that of cotton. the water soluble staple is of natural degradation in soil

    作為維尼綸系列纖維產品的一種，水溶性聚乙烯醇纖維因其獨有的水溶特性93度以下熱水中可以溶解，高強度一般棉花的1 . 53倍且在土壤中可自然降解，是一種理想的新興綠色環保纖維。
  6. A ; insulating and sheathing materials of electric and optical cables - common test methods - part 4 - 2 : methods specific to polyethylene and polypropylene compounds - tensile strength and elongation at break after conditioning at elevated temperature - wrapping test after conditioning at elevated temperature - wrapping test after thermal ageing in air - measurement of mass increase - long - term stability test - test method for copper - catalyzed oxidative degradation

    電纜絕緣護套材料的通用試驗方法.第4部分:聚乙烯與聚丙烯復合物專用方法.第2節:預處理后的斷裂伸長率預處理后的翹曲試驗在空氣中熱老化后的翹曲試驗增加量測量長期穩定性試驗
  7. Based on the study of strength degradation of material in the fatigue process, a strength degradation model is proposed. a stochastic differential equation, which controls strength degradation, is obtained from the model randomized by markov process. by using the theory of stochastic, the distributions of residual strength at any given lifetime and lifetime of any given residual strength are attained. under a few suitable hypotheses, inverse gaussian distribution of fatigue life is derived, and verified by means of experimental data. the result shows that the model and the method are reasonable

    在研究疲勞過程中材料強度退化規律的基礎上，建立了一個強度退化模型.對其進行隨機化處理，得到控制強度退化過程的隨機微分方程.在一定假設條件下，獲得了剩餘強度概率密度函數的封閉解，並推導出疲勞壽命的反高斯分佈形式.給出一種考慮損傷狀態對隨機漲落影響的近似處理方法.與試驗數據的比較結果表明，本文的模型和方法是合理的
  8. An experimental program which includes lots of unidirectional laminae is conducted using t300 / bmp - 316 material for researching the static and fatigue behaviour of the unidirectional ply. the experimental research for mechanical behaviour of a unidirectional lamina is to set up expressions of the normalized fatigue life, the residual strength degradation and the residual stiffness degradation of a unidirectional ply in the longitudinal, transverse and in - plane - shear directions, which also verifies the fact of nonlinear shear stress - strain behavior of a unidirectional ply in the 1 - 2 planes

    其中:分別對材料t300 / bmp - 316單向層合板縱向、橫向及面內剪切靜載力學性能及疲勞特性進行了試驗研究，並採用最小二乘法擬合得到各主方向正則化疲勞壽命表達式，以及單層板各主方向疲勞加載剩餘剛度退化表達式及剩餘強度退化表達式;試驗同時驗證了單向層合板1 - 2面上明顯的剪切應力應變非線性關系。
  9. ( 4 ) a nonlinear model including the loss of cross - sectional area of corroded rebar, the reduction of mechanical properties of corroded steel and the degradation of the bond strength between concrete and corroded rebar was presented

    氯離子擴散系數是一個隨時間、擴散深度和氯離子濃度變化的變量。 （ 4 ）建立了考慮銹蝕鋼筋截面面積減小、力學性能下降以及混凝土與鋼筋之間粘結性能退化的非線性模型。
  10. According to the geological conditions of baise project, erosive bands and joint fissures, f6 fault and grout curtain are fully simulated to establish 3d numerical model of the dam and its foundation. 3d non - linear fem is used to analyze the stress and strain and to appraise the operation state of both the dam and it ' s foundation under different operation conditions. by overloading the upstream water level and reducing rock strength parameter, the dam foundation ' s degradation process is simulated and the damage pattern and paths are determined, and finally the safety factor is determined

    2 、根據百色的地形地質條件，充分模擬了蝕變帶、節理裂隙、 f6斷層、灌漿帷幕等，較為真實地建立了壩體與地基相互作用的整體三維數值模型；採用有限元法對壩體及壩基在不同工況下的應力應變狀態開展分析，評價各工況下壩基的運行狀態；而後採用超載法和綜合法對大壩穩定性進行分析，模擬壩基的漸進性破壞過程，從而得到壩基在超載和強度下降過程中的破壞模式和破壞發展路徑，最終確定壩基超載安全系數和綜合安全系數。
  11. Analyzing the instance in roadbed and cutting engineering of underground karat hole through strength degradation, it reproduces the breaking and steady losing process of the roadbed and cutting the intensity parameter during losing steadily is gained, it has certain directive significance to the roadbed and cutting engineering

    對處于巖溶地區的地下溶洞路床路塹工程實例進行分析，通過強度折減，再現了地下溶洞路床路塹工程的破裂與失穩過程，並得出了失穩時的強度參數，對工程有一定的指導意義。
  12. According to the problem of failure and instability in roadbed and cutting engineering of underground karat cavity, on the basis of inhomogeneous elastic damage model, this thesis propose the fem back - analysis from instability - strength degradation, to describe inhomogeneity of material suppose that the material parameter obeys statistical distribution

    摘要針對地下溶洞路床路塹工程變形與失穩問題，本文提出了基於非均質彈性損傷模型的有限元失穩強度折減反分析法，認為材料參數服從統計分佈來描述材料的非均勻性。
  13. In this study, the degradation of the bond strength between the steel rebar and concrete by the impressed cathodic current was investigated

    摘要本研究系探討外加陰極防蝕電流以鋼筋與混凝土介面間的握裹強度之折減效應。
  14. Insulating and sheathing materials of electric and optical cables - common test methods - methods specific to polyethylene and polypropylene compounds - tensile strength and elongation at break after conditioning at elevated temperature - wrapping test after conditioning at elevated temperature - wrapping test after thermal ageing in air - measurement of mass increase - long - term stability test - test method for copper - catalyzed oxidative degradation

    電纜和光纜的絕緣和護套材料.通用試驗方法.聚乙烯和聚丙烯化合物專用方法.高溫處理后抗拉強度和斷裂伸長度.高溫處理后的卷繞試驗.在空氣中熱老化后的卷繞試驗.質量增加的測量.長期穩定性試驗.催化銅氧化降解的試驗方法
  15. Secondly, by low - cycle and reverse horizontal loading test, their properties including strength property, deformation property and energy property are studied. we study the loading characteristic values ; the property of hysteretic curve and skeleton - frame curves ; the ductility property and stiffness degradation. at last we analyze the destroy principle and affection reasons of hollow shear wall of r. c with vertical seams in different height and loading measures, we also give the bearing capability calculation formulas and design advises for new type hollow shear wall of r. c

    首先運用ansys有限元程序分析彈性階段水平外荷載施加后，帶豎縫鋼筋砼空心剪力墻板內應力分佈及變形情況，再在試驗數據的基礎上，研究低周反復水平加載條件下，各試件的強度、變形、能量特性；各試件的荷載特徵值；各試件的滯回曲線、骨架曲線；延性及剛度退化等參數；最後，分析了不同剪跨比和加載條件的帶豎縫鋼筋砼空心剪力墻板的破壞機理和承載力影響因素，並給出不同剪跨比和加載條件的帶豎縫鋼筋砼空心剪力墻板承載力計算公式及設計建議。
  16. ( 5 ) simplified calculation method without considering degradation of bond strength and response surface method using analysis output by fem is carried out to calculate the time - dependent reliability of corroded structure separately. the influence of chloride diffusion rate and steel corrosion ratio on structure reliability is discussed. the applicable scope and the calculation difference between the two methods are compared

    （ 5 ）分別採用不考慮混凝土與銹蝕鋼筋之間粘結力減弱的簡化方法和利用非線性分析結果的響應面方法計算銹蝕鋼筋混凝土結構的時變可靠度，研究了氯離子侵蝕速率、鋼筋銹蝕率對結構可靠度的影響，並分析比較了這兩種可靠度計算方法的適用范圍和計算差異，為混凝土結構基於可靠度的耐久性鑒定提供了實用判別方法。
  17. Abstract : based on the study of strength degradation of material in the fatigue process, a strength degradation model is proposed. a stochastic differential equation, which controls strength degradation, is obtained from the model randomized by markov process. by using the theory of stochastic, the distributions of residual strength at any given lifetime and lifetime of any given residual strength are attained. under a few suitable hypotheses, inverse gaussian distribution of fatigue life is derived, and verified by means of experimental data. the result shows that the model and the method are reasonable

    文摘:在研究疲勞過程中材料強度退化規律的基礎上，建立了一個強度退化模型.對其進行隨機化處理，得到控制強度退化過程的隨機微分方程.在一定假設條件下，獲得了剩餘強度概率密度函數的封閉解，並推導出疲勞壽命的反高斯分佈形式.給出一種考慮損傷狀態對隨機漲落影響的近似處理方法.與試驗數據的比較結果表明，本文的模型和方法是合理的
  18. Long - span bridges service under long - term transportation loads, strength degradation of structure materials because of fatigue cumulative damage is key factor of durability

    大型鋼橋是在交通載荷作用下長期工作的，疲勞累積損傷引起結構材料強度逐漸退化，成為大型鋼橋耐久性的關鍵因素。
  19. The experimental results show that the seismic behavior of strengthened joints is improved significantly by the scheme, which successfully enhances the shear capacity by about 22 %, transforms the failure mode to be ductile, raises the ductility coefficient over 4, delays the strength degradation and stiffness degradation, and upgrades the energy dissipation capacity

    試驗結果表明：加固能夠有效地提高節點的極限受剪承載力22 %左右，改變節點的破壞模式為梁端延性破壞，提高節點的延性系數到4以上，改善節點的承載力退化和剛度退化，提高節點的能量耗散能力，從而顯著改善了樑柱節點的抗震性能。
  20. Reliability analysis of concrete fatigue life under spectrun load based on residual strength degradation

    譜荷載下剩餘強度衰減的混凝土疲勞壽命可靠性分析
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