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Laser Shock Processing as an Advanced Technique for the Surface and Mechanical Resistance Properties Modification of Bioabsorbable Magnesium Alloys J.L.
Biodegradable/absorbable materials have emerged especially in the fields of bone fixation devices and tissue engineering scaffolds, Mg alloys being one of the most common biodegradable materials that are studied extensively because of its low density and modulus of elasticity close to bone with high fracture toughness when compared to the conventional hydroxyapatite material.
The presented results are considered to be a significant contribution to an important practical problem in the biomedical frame, as they involve the introduction of fully systematic engineered mechanical improvements on biomedical replacement implants (in this particular case the strengthening of Mg based implants with limited resistant life) that can open the way for a fundamental transformation of the range of possibilities associated to this class of chirurgical techniques.
Ocaña et al.: Materials Science Forum, 879, 1408-1413, (2017) [10] A.A.
Ocaña et al.: Materials Science Forum, 706-709, 2565-2570 (2012)

Effect of Ultrasonic Impact Treatment on the Residual Stress Distribution of Electron Beam Welded TA15/BTi-6431S Dissimilar Titanium Alloys Xiaoyun Song1,a*, Guanglu Qian2,b, Mingyu Zhao3,c, Yuwei Diao4,d, Wenjun Ye5,e and Songxiao Hui6,f State Key Laboratory of Nonferrous Metals & Processes, GRIMAT Engineering Co.
Boyer, Titanium for aerospace: rationale and applications, Advanced Performance Materials, 2 (1995) 349-368
Zeng, Electron beam welding, laser beam welding and gas tungsten arc welding of titanium sheet, Materials Science and Engineering A, (2000) 177-181
Liu, Effects of Stress-relief annealing on the residual stress and the microstructure of TA15 welded joint, Materials Science Forum, 849 (2016) 281-286
Zhu, Research on the microstructure and properties of weld repairs in TA15 titanium alloy, Materials Science and Engineering: A, 445-446 (2007) 691-696

Effects of ultrasound on the microstructures and mechanical properties of cast-rolling AZ31B magnesium alloy strip Li Jianpinga, Hu Jianbingb, Mao Dahengc, Zhao Guanzhongd College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, China,410083 aRikennpei102@hotmail.com; b357931011@163.com; cmdh@mail.csu.edu.cn; dzhao0116@126.com Keywords: Ultrasound; AZ31B magnesium alloy; Cast-rolling; Mechanical properties.
Introduction With the advantages of low density, high specific strength and specific stiffness, electromagnetic shielding and easy recycling, magnesium alloys have become the important engineering structure materials [1-3].
However, there is a gap between the production of magnesium sheet and the international advanced research, because the production of magnesium sheet has a more developed dendritic cells network, tissue uneven, coarse grains and worse mechanical properties [17-19].
[4] Xin bao Liu, Yoshiaki Osawa, Susumu Takamori, et al: Materials Letters Vol.62 (2008), p.2872-2875 [5] A.Ramirez, Ma.Qian, B.Daves, et al: Scripta Materialia Vol.9 (2008), p.19-22 [6] Deming Gao,Zhijun Li, Qingyou Han, et al: Materials Science and Engineering:A Vol.502 (2009), p.2-5 [7] X.W.Guo, W.J.Ding, C.Lu, et al: Surface and Coatings Technology Vol.183 (2004), p.359-368 [8] O.
Park, et al: Materials Science Forum Vol.2 (2003), p.599-604 [14] Chongqing University.

Jarašiūnas1, e 1Institute of Applied Research and Department of Semiconductor Physics, Vilnius University, Lithuania 2Department of Engineering Physics, Electronics and Mechanics, Nagoya Institute of Technology, Japan apatrik.scajev@ff.vu.lt, balgirdas mekys@ff.vu.lt, cjurgis.storasta @ff.vu.lt, dkato.masashi@nitech.ac.jp, ekestutis.jarasiunas@ff.vu.lt Keywords: Cubic silicon carbide, Hall effect, magnetoresistivity, light induced diffraction grating, free carrier absorption, mobility, carrier lifetime.
Nagasawa et al, In: Silicon Carbide: Recent major advances, eds.
Forum Vol. 645-648 (2010), p. 135 [3] J.
Forum Vol. 645-648 (2010), p. 83 [4] F.C.
Forum Vol. 615-617, (2009), p. 303

Materials Science Forum Vols. *** (2004) pp.330-334 online at http://scientific.net  2004 Trans Tech Publications, Switzerland A New Model for Predicting Small Crack Growth Rates H.C.
Cheng 1,c 1 School of Mechanical Engineering, Shangdong University, Jinan, 250061, P.R.China a hongcaizh@sdu.edu.cn, bhuangkz@sdu.edu.cn, c chengjh@sdu.edu.cn Keywords: Small fatigue cracks, Paris equation, Transition crack length, Crack closure Abstract.
The short fatigue crack growth barrier size dimension is d* and the linear elastic fatigue crack Barrier threshold Mechanical threshold d* ath Stage I Stage II growth a) σ < σfl c) σ > σfl b) σ = σfl Materials Science Forum Vols. *** 331 considered to be mechanically small.
( )4 1 2 0 0       ∆ ∆ = e K a σπ Advances in Materials Manufacturing Science and Technology 332 where 0K∆ is the threshold value of long crack stress intensity factor range, independence of the crack size, and ∆ eσ is the stress range at the fatigue limit.
The modified Paris equation for small-crack growth rate, Eq.(3), after incorporating the discussions above, becomes ( )( ) ( )( ) [ ] ( )( )[ ( ) ( )( )] ( )8 1 exp1 exp exp1 d d 2 0 0 0 0 min max,       ∆ ∆ = −−−+− ⋅ − −−−−∆= e n opi K a aam aam aYKaak aYC N a σπ φ φ πσ πσ The local property parameters, φ and m, satisfies the following equation: ( )9 1 ln 2 1* 0       − =− φ φ m da Materials Science Forum Vols. *** 333 The unification form of small- and large-crack growth rate can be written as Applications of the New Model Comprehensive data on Ti-6Al-4V for long and small cracks have been chosen to validate the proposed model.

Influence of cerium on the formation of micro-galvanic corrosion elements of AZ91 Daniela Zander1, a, Meredith Heilig1, Norbert Hort2, Gerald Klaus3, Andreas Bührig-Polaczek3, Joachim Gröbner4 and Rainer Schmid-Fetzer4 1Dept. of Biochemical and Chemical Engineering, TU Dortmund, D-44221 Dortmund, Germany 2HZG Research Centre, D-21502 Geesthacht, Germany, 3Foundry Institute of RWTH Aachen, D-52056 Aachen, Germany 4Institute of Metallurgy, TU Clausthal, D-38678 Clausthal-Zellerfeld, Germany adaniela.zander@bci.tu-dortmund.de Keywords: AZ91D, cerium, corrosion, microstructure Abstract.
However, significant advances were reported in the development of corrosion resistant magnesium alloys during the last decades.
Forum Vol. 57 (2003), p. 419
Forum Vol. 867 (2003), p. 419 [10] Y.
Forum Vol. 488-489 (2005), p. 869 [11] N. 

Badlishah Ahmad1,b and Ali Amer Ahmed1,c 1School of Computer and Communication Engineering, Universiti Malaysia Perlis, Malaysia ayhky73taae@yahoo.com, bbadi@unimap.edu.my, cali_alrawi2003@yahoo.com Keywords: GPS, Hardware, Software, PDA, Bread crumb, GSM.
Electric vehicles is a perfect transportation systems to move people inside the sustainable city, The most advanced GPS / GPRS hardware designed for tracking solution u-blox all-in-one GPS receiver for high sensitivity , fastest connectivity (hot start: < 1.2 sec, warm start: < 30sec) and most accurate positioning (SBAS: 2m) will be used.
Scharnhorst, "Using truck probe GPS data to identify and rank roadway bottlenecks," Journal of Transportation Engineering, vol. 139, pp. 1-7, 2012
Žagar, "GPS Tracking of Self-balancing Vehicle for Extreme Environment based on AndroidOS," in 20th Telecommunications Forum TELFOR 2012, 2012
Perugu, "An innovative method using GPS tracking, WINS technologies for border security and tracking of vehicles," in Recent Advances in Space Technology Services and Climate Change (RSTSCC), 2010, 2010, pp. 130-133

Qadrdan, Dynamic modelling and control of counter-flow heat exchangers for heating and cooling systems, 2019 54th International Universities Power Engineering Conference (UPEC), Bucharest, Romania (2019) 1-6
Ogedengbe, Welding of dissimilar metals using gas metal arc and laser welding techniques: a review, Journal of Emerging Trends in Engineering and Applied Sciences, 8(6) (2017) 225-228
Series: Materials Science and Engineering 142 (2016) 012005 https://doi.org/10.1088/1757-899X/142/1/012005 [36] A.F.
Sydorets, Physical and mechanical properties of high-strength steel joints produced by laser welding, 2017 IEEE International Young Scientists Forum on Applied Physics and Engineering (YSF), Lviv (2017) 88-91. https://doi.org/10.1109/YSF.2017.8126596 [39] S.
Lisiecki, Laser welding of the new grade of advanced high-strength steel DOMEX 960, Materiali in tehnologije / Materials and technology 51(7) (2017) 199-204

Their collective efforts were instrumental in making this conference a resounding success and a vital platform for advancing the field of civil infrastructure engineering.
Hashim Raza Conference Secretary/Co-Focal Person TECHIEM, Associate Professor, Software Engineering NED University of Engineering and Technology Engr.
Waleed Ahmed Khan Lecturer Department of Civil Engineering, NED University of Engineering and Technology Engr.
Faiza Saeed Lecturer Department of Civil Engineering, NED University of Engineering and Technology Engr.
Samra Masood Lecturer Department of Civil Engineering, NED University of Engineering and Technology Engr.

FSW found its way into becoming one of the most fascinating engineering subjects of today.
The rotational and advanced speeds are respectively 1100 rpm, and 30 mm / min.
Laxminarayana, Effect of Welding Speed on Mechanical Properties of Dissimilar Friction Stir Welded AA5083-H321 and AA6061-T6 Aluminum Alloys, International Journal of Advanced Engineering Research and Science, 4 (2017) 22-28
Jatti, Friction Stir Welding of Polymer, international journal of advance research in science engineering, 6 (2017) 907-922
Procedia Engineering, 114 (2015) 199 – 207