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Numerical and Experimental Research on Water-jet Guided Laser Micromachining L.J.Yang 1,2,a , M.L.Wang2,a , Y.Wang 2,b, J.Tang3,a and Y.B.Chen 1,a 1 School of Material Science and Engineering, Harbin Institute of Technology,Harbin,150001,China 2 Department of Aeronautics and Astronautics Manufacturing Engineering, Harbin Institute of Technology, Harbin, 150001,China 3 College of Civil Engineering and Refrigeration Engineering, Harbin University of Commerce, Harbin, 150001,China a yljtj@hit.edu.cn, bwyyh@hit.edu.cn Keywords: Water-jet guided laser, Micromachining, Temperature field, Coupling energy jet Abstract.
[4] Couty P, et al: Optical Engineering, Vol.44(2005), pp.1-8
[5] Spiegel Á, Vágó N, and Wagner F R:Optical Engineering, Vol.43(2004),pp.450-454

Rezaur Rahman2,d 1Faculty of Engineering, Computing and Science, Swinburne University of Technology Sarawak Campus, Kuching, Sarawak, Malaysia 2Faculty of Engineering, University of Malaysia Sarawak, Kuching, Sarawak, Malaysia aejayamani@swinburne.edu.my, bkhsoon@swinburne.edu.my, chsinin@feng.unimas.my, drmrezaur@feng.unimas.my Keywords: Natural fiber composites, sound absorption coefficient, impedance tube.
Hansen, Fundamentals of acoustics, Department of Mechanical Engineering, University of Adelaide, Australia, 2006, pp. 23-52
Mohd Yhazri, The potential of agriculture waste material for noise insulator application toward green design and material, J. of Civil and Environmental Engineering. 10, 5 (2010) 16-20
Seybert, Measuring Bulk properties of sound absorbing materials using the two source method, Society of Automotive Engineers, 2003, pp. 1-6
Imran Ghazali, Sound absorption of Arenga pinnata natural fiber, World Academy of Science, Engineering and Technology. 4 (2010) 601-603

The Failure of Carbon Fiber Reinforced Composite Analyzed by Acoustic Emission Vladimír Mára1,a*, Jan Krčil1,b, Lenka Michalcová2,c and Elena Čižmárová1,d 1Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Karlovo náměstí 13, 121 35 Prague 2, Czech Republic 2VZLU - Czech Aerospace Research Centre, Beranovych 130, 199 05 Prague–Letnany, Czech Republic avladimir.mara@fs.cvut.cz, bjan.krcil@fs.cvut.cz, cmichalcova@vzlu.cz, delena.cizmarova@fs.cvut.cz Keywords: Composite, Acoustic emission, Damage, Fracture.
The most common use of fiber composites was in military and space industry, but they have also found application in civil flights, engineering, construction or medicine.
The engineering stress-strain diagram was recorded for each testing specimen and results were evaluated as means with ± standard deviation (SD).
Kadlec, Carbon/epoxy composite delamination analysis by acoustic emission method under various environmental conditions, Engineering Failure Analysis 69 (2016) 88-96
Acoustic emission of material damages in glass fiber-reinforced plastics, Composites Part B: Engineering 155 (2018) 444-451

Box 77, D/A Pejabat Pos Besar, Kangar, Perlis 01000, Malaysia 2Center of Excellence Geopolymer & Green Technology (CeGeoGTech), School of Material Engineering, Universiti Malaysia Perlis (UniMAP), P.
Box 77, d/a Pejabat Pos Besar, 01000 Kangar, Perlis Malaysia. 3King Abdul Aziz City Science & Technology (KACST), P.O Box 6086, Riyadh 11442, Kingdom of Saudi Arabia. 4Department of Civil Engineering, ITS, Kampus ITS Surabaya, 60111, Indonesia.
Development of Fly Ash-Based Geopolymer Lightweight Bricks Using Foaming Agent – A Review, Key Engineering Materials, 2015 [5] Mastura, W.I.Wan; kamarudin, H.
Effect of curing System on Properties of Fly Ash-Based Geopolymer Brick , International Review of Mechanical Engineering, 2013
Concrete Construction Engineering Handbook.

Investigation of PDC Cutter Interface Geometry Using 3D FEM Modelling Seyed Ali Heydarshahy 1, a *and Shivakumar Karekal 1,b 1 School of Civil, Mining and Environmental Engineering, EIS Faculty, University of Wollongong, Australia asah973@uowmail.edu.au, bskarekal@uow.edu.au Keywords: PDC cutter; 3D FEM; interface geometry; 3D stress distribution; rock cutting.
Engineering stress to true stress: σtrue= σnominal (1+ϵnominal) (1) Engineering strain to true strain: ϵtrue= ln (1+ϵnominal) (2) True stain to true plastic strain: ϵplastic= ϵtrue- (σtrue/E) (3) Table 1.
Conclusion Traditionally, the engineering concept is to increase the contact area between the diamond table and substrate interfaces to improve their behaviour under shear loading (larger areas for bonds).
Fanchi, Petroleum engineering handbook. 2006: Richardson, TX : Society of Petroleum Engineers

The Stability Analysis of Nantong Coal Mine Waste Dump,Chongqing and Prevention Measures Xintao Zhao1, a, Xinchun Gao2,b and Dongsheng Li3,c 1Safety Engineering department,Henan Institute of Engineering,Zhengzhou 451191, China 2Safety Engineering department,Henan Institute of Engineering,Zhengzhou 451191, China 3College of Civil Engineering,Chongqing University,Chongqing 400045,China afmjrbaopo@163.com Keywords: waste dump; stability analysis; prevention measures; limiting equilibrium method; FLAC; landslide and collapse.
The calculation parameters are selected base on field test and refer to 《Treatment project preliminary investigation report of Nantong coal mine waste dump,Chongqing》as well as experience inengineering and engineering geology manual, they are showed in Table 1.
(4) It is proposed that natural fall mode is replaced by horizontal push mode,the engineering measure that stacking a layer and compacting a layer immediately should be took in gangue stacking and it can increase the consolidation speed and consolidation extent of waste dump,in order to strengthen the anti-disturbance ability of the slope we can use slope vegetation

In: American Society of Civil Engineers Transactions 121, 1956, pp. 1337-1397
In: Journal of Manufacturing Science and Engineering 101, 1979, pp. 36-44
In: Journal of Engineering Materials and Technology 100, 1978, pp.279-286
In: Journal of Engineering Materials and Technology 108, 1986, pp. 245-249
In: Journal of Engineering Materials and Technology 107, 1985, pp. 83-89.

Impact factor statistics analysis of concrete filled steel tube arch bridge considered random roughness of bridge deck Xiangwei Hao1, a, Feng Ma2, b, Qingyang Ma2, c 1School of Civil engineer, Northeast Forestry University, China,150040 2 JiNan Urban Construction Group, Shandong, China, 250000 ahxw_75@126.com, b526799681@qq.com, c85478927@qq.com Keywords：concrete-filled steel tube arch bridge, axle vibration, dynamic analysis, impact effect, statistic analysis Abstract: The essence of the axle coupling vibration in case of random bridge deck is random vibration, therefore, it is quite necessary to research the effect of vehicle impact on basis of statistic analysis.
In addition, a large quantity of engineering practices shows that the axle vibration effect of this type of bridge is marked and is worthy to be focused.
Comparison between the calculated displacement-time curve and the actually-measured values for the span middle of structure shows that the two coincide well, demonstrates the accuracy and engineering practicability of program in the paper.
The static analysis method was applied for carrying out the static analysis and research for the vehicle load impact effect of bridge in case of roughness, so to provide reference for the relevant research and engineering application.
Journal of Bridge engineering, 2005, 10: 133-141

The Applicability of GRP and NRP Composites in Rehabilitation of Unpressurized Pipes Akin Akinci*, Ahmet Gulec and Fevzi Yilmaz Sakarya University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Esentepe Campus, 54187 Sakarya/Turkey e-mail:akinci@sakarya.edu.tr Keywords: Polymer matrix composite materials (CIPP), three point flexural test, abrasive and erosive wear, sewer pipes.
In Figure 2 a, a special needled felt reconstruction tube, coated on the outside, is custom engineered and manufactured to fit the damaged pipe exactly.
Omara: Analysis of cured-in-place (CIPP) installed in circular and oval deteriorated host pipes, Doctorate thesis, College of Engineering Louisiana Tech University (1997) 1-6 [3] M.
Reinhart, Engineered Materials Handbook, Composites, ASM International, Vol. 1 (1987) 215-218 [7] L.
Hollaway: Polymer Composites for Civil and Structural Engineering, Blackie Academic and Professional, Chapman & Hall (1993) 131 [8] J.A.

Evolutionary Identification of Deformation Dynamics of Geotechnical Structures Yang Chengxiang 1,a, Feng Xiating 2,1,b 1 School of Resources & Civil Engineering, Northeastern University, Shenyang 110004, China. 2 Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan, 430071 China.
Introduction Deformation prediction has been an essential criterion in the design, construction and maintenance of geotechnical engineering since deformation contains enough stability information of geotechnical structures.
However, affected by rheologic property of geo-materials and many other engineering factors, geotechnical deformation is highly time-dependent and commonly characterized with complex nonlinear dynamic behavior.
It can be widely used in geotechnical engineering as a useful tool for deformation prediction and in the prediction analysis of other complex dynamic systems.
Chinese Journal of Geotechnical Engineering Vol. 25 (2003), p. 468 (in Chinese) [7] D.