Cracking of normal paraffins having long chains, beginning at a very low degree of cracking, about 0.1%, takes place as a chain process with chain generation as a result of decomposition of C 4 and higher olefins.doi:10.1007/BF00718158R. Z. Magaril...
aThe mechanism of n-pentane thermal cracking was studied with this new method. According to the research results,a total of 25 radical reactions may occur in the themal cracking of n-pentane. 机制n戊烷加热分裂学习了以这个新的方法。 根据研究结果,总共25根本反应在themal裂化也许发生n戊烷。 [...
This study leads to an enhanced understanding of thermal induced cracking assisted rock cutting mechanisms in hard deep formation drilling, and provides the basis for developing the thermal induced cracking assisted rock cutting machines. 2. Thermal formulations By assuming the strain changes of ...
The investigations showed that the thermal cracking is the key factor causing the corner and surface spalling, and suggested that a coupling of thermal cracking and pore pressure is the main cause of explosive spalling and uncertainty of explosive spalling. The explosive spalling induced by elevated ...
1) thermal cracking mechanism 热爆机理 2) mechanism of blasting 爆破机理 1. Holophotoelasticity study onmechanism of blastingunder initiative stress field; 初始应力条件下爆破机理的动光弹实验研究 更多例句>> 3) explosion mechanism 爆炸机理 1. ...
Kinetics of the primary cracking reactions occurring in the high pressure thermal hydrogenolysis of 1, 2, 3, 4-tetrahydronaphthalene (tetralin) and hydrindene (indan) were studied in a flow reactor at temperatures from 460° to 540°C, total pressures from 10 to 160 atm. and molar ratios of...
During the wellbore drilling process, the local temperature of the rock mass drops sharply when the high-temperature rock body encounters water, leading to thermal cracking. On the one hand, this is beneficial for breaking the rock in the wellbore and thus improving the drilling efficiency. On ...
followed by biotite of high lattice energy. However, due to the thermal shock induced, the intragranular microcracks of the rapid cooling technique began to form at lower temperatures (200 °C). The physical and mechanical properties of rapidly cooled granodiorite significantly dropped between 200 and...
Acoustic emission (AE) technique was adopted to monitor the damage evolution of air plasma- sprayed (APS) yttria-partially-stabilized zirconia (YSZ) thermal barrier coatings (TBCs) during instrumented indentation testing, and then the failure mechanisms were investigated by cluster analysis and wavelet...
Analysis of initial cracking behavior of expansive soil due to moisture change stress Water swelling and drying shrinkage due to moisture change is the expansive soil's characteristic which is similar to the thermal effect of material.Stress... JH Wu,JP Yuan,TH Lu - 《Rock & Soil Mechanics》...