Results 61 to 70 of about 410,650 (290)
Shiyou jixie, 2022 In deepwater riserless drilling system,drill string in seawater is affected by external ocean load,torque of top rotary table and bottom bit-formation force,so it is prone to vibrate in the three directions of longitudinal,transverse,and torsional,making
Liu Jun +3 more
doaj
Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
wiley +1 more source
Safety Evaluation Method for Casing Running in Deep Shale Gas Horizontal Wells
Shiyou jixieTo address issues such as passability and pre-fracturing casing deformation during casing running operation in deep shale gas wells， the beam-column infinitesimal method was used to build a mechanical model for trajectory of casing running in crooked ...
Zeng Bo +6 more
doaj +3 more sources
Bending Fretting Fatigue Characteristics of 18CrNiMo7-6 Alloy Steel
Cailiao gongcheng, 2017 A series of bending fretting fatigue tests of 18CrNiMo7-6 alloy steel were carried out, the bending fretting fatigue S-N curve was built up, and an analysis was made on the test results.
SHEN Yan-tuan +5 more
doaj +1 more source
Polish Maritime Research, 2020 In order to study the dynamic response of a drill pipe under the motion of the float platform, current and waves during the installation of a subsea production tree (SPT), a numerical model was established to analyse the mechanical properties of the ...
Wang Fei, Chen Neng
doaj +1 more source
Characterisation of a resonant bending fatigue setup for pipes [PDF]
, 2011 This paper discusses the resonant bending fatigue test setup designed at laboratory Soete for full-scale fatigue tests on pipes. Following an enumeration of other types of fatigue test setups an attempt is made to characterise the resonant bending ...
Claeys, Jonas +3 more
core +1 more source
Advanced Functional Materials, EarlyView.Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong +16 more
wiley +1 more source
Stress Analysis of Meshing Gear with Staggering Tooth
Jixie chuandong, 2015 The contact stress and bending stress are calculated and comparatively analyzed with the same meshing tooth width by using three methods of the national standard formula based,Romax software（full tooth meshing） and Romax software（staggering tooth meshing）
Liu Yaqiong +5 more
doaj
Summary of static load test of the Mod-0 blade [PDF]
A static load test was performed on the spare Mod-0 wind turbine blade to define load transfer at the root end of the blade, and to validate stress analysis of this particular type of blade construction (frame and stringer). Analysis of the load transfer
Miller, D. R.
core +1 more source
Power generation by using piezoelectric transducer with bending mechanism support [PDF]
, 2018 This paper presents about power generation by using piezoelectric transducer with bending mechanism support. In this study, bending mechanism is developed by employing 3D printer technology.
Ahmadon, Mohd Anuaruddin +4 more
core +5 more sources