全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
中外文文献  中文文献  外文文献
作者:Behrad Rashidi , Geir Hareland , Zebing Wu
来源:[J].Journal of Petroleum Science and Engineering(IF 0.997), 2015, Vol.133, pp.507-517Elsevier
摘要:... Also, the bit wear effect for simulating accurate rock strength and ROP values is included in the analysis using a previously published model. One of the most important features of the newly introduced ROP model is that it can be easily inverted to generate accurate rock strength...
作者:Sumit Goenka , Rajkamal Balu , T.S. Sampath Kumar
来源:[J].Journal of the Mechanical Behavior of Biomedical Materials(IF 2.368), 2012, Vol.7, pp.69-76Elsevier
摘要:... The cement cylinders were tested for ionic release in Millipore water ( pH = 7 ) via inductive coupled plasma (ICP) spectroscopy and in demineralization solution of pH = 5 to find out the weight loss in an acidic environment at 37 °C performed periodically for 5 weeks. The ...
作者:Xiping Wang , Deborah Page-Dumroese , Martin F. Jurgensen ...
来源:[J].Holzforschung(IF 2.416), 2007, Vol.61 (5), pp.605-610De Gruyter
摘要:... Compression (parallel to grain) tests were then performed on the stakes in the laboratory to obtain residual elastic and strength properties. The results indicate that the pulse-echo acoustic method is a good approach to characterize wood stakes that are fully inserted into m...
作者:Yong Deng , Mian Chen , Yan Jin ...
来源:[J].Journal of Natural Gas Science and Engineering, 2016, Vol.36, pp.117-123Elsevier
摘要:... In this study, a new prediction model of the ROP considering the combined effect of the main drilling parameters and rock dynamic compressive strength is developed for roller cone bits. The model is derived based on the mechanism of rock fragmentation under a single tooth im...
作者:Hamed Dabiri , Mohammad Kazem Sharbatdar , A. Kavyani ...
来源:[J].Civil Engineering Journal, 2018, Vol.4 (7)C.E.J
摘要:... The effect of replacing aggregate with waste glass particle on the compressive strength and weight of concrete is investigated in this study. To achieve the goal, totally 27 cubic specimens were created; 6 specimens were made of concrete, while waste glass particle was added ...
作者:Seung Jo Lee , Jung Min Park
来源:[J].Applied Mechanics and Materials, 2013, Vol.2574, pp.1052-1055Trans Tech
摘要:... The mechanical properties measured include residual compressive strength, weight reduction ratio, outward appearance property, and failure mode. Nylon, polypropylene, and steel fiber were added to enhance mechanical property of the concretes. After exposure to high temperatu...
作者:Hong Zhu Quan
来源:[J].Advanced Materials Research, 2012, Vol.2026, pp.150-153Trans Tech
摘要:... The temperature of 50°C at which compressive strength was minimal were found for concrete with high-early strength and medium-heat portland cement, which concrete with other cements showed no change up to 110°C. Relationship between weight loss and compressive strength...
作者:A. salau M. , E. Ikponmwosa E. , A. Olonode K.
来源:[J].American Journal of Materials Science, 2013, Vol.3 (5), pp.7Scientific & Academic Publishing
摘要:... After exposure, it was allowed to cool at room temperature (24°C) before weight losses, thermal strain were determined as well as residual compressive strength. Test results showed that weight of all the specimens significantly reduced with an increase in temperature. Thi...
来源:[S].1975-10-01CNKI
被引频次:-下载频次:-
作者:Alexander Jordan , Sigrid Adriaenssens , Axel Kilian ...
来源:[J].Computer-Aided Design(IF 1.264), 2013Elsevier
摘要:... Material tests revealed a compressive strength/weight ratio 24 times smaller than standard concrete. To use unreinforced chocolate, this restriction dictated a form with minimal bending: an inverted hanging shell with voids. An integrated form-finding, void-optimization an...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×