Search results

This paper provide a full literature review and a comprehensive analysis of the literature, reviewed according to current knowledge on the matter, mainly dealing with experimental and theoretical fatigue analysis on riveted steel bridges, being fatigue the most common detrimental factors affecting these bridge types [1].
It was observed that with the exception of the grip length and shear-tension ratio, most of the variables did not affect the ultimate strength of the rivets.
When compared to the results obtained by the same authors on flange plate specimens, the results suggested that rivets in tension and rivet holes have approximately the same stress concentration factor.
The fatigue assessment of orthotropic steel bridge deck based on hot spot stress method [66] is of interest; a general approach to consider the Fatigue assessment and strengthening measures to upgrade a steel railway bridge is in [67]; the bridge fatigue reliability assessment using probability density functions of equivalent stress range based on field monitoring data [68] is a very useful study for expert of the matter; while for a more mechanical engineering based study, the crack water interaction and fatigue life assessment of reinforced concrete bridge decks is of interest [69], as the fracture mechanics approach as an improvement of fatigue life assessment in orthotropic bridge decks, in [70], or the fatigue damage assessment of steel bridge members using paint cracking [71]; a specific view on the fatigue damage estimation in existing railway steel bridges by detailed loading history analysis could be of interest for railway engineers [72], and also considering fatigue/corrosion
Steel Bridge Design Handbook: Bridge Steels and Their Mechanical Properties.

Various applications have been proposed which make use of their superior properties [13].
This also tends to affect the properties of resulting composite whose effect will become apparent in hardness measurements taken in these regions.
-S., et al., A CuZr-based bulk metallic glass composite with excellent mechanical properties by optimizing microstructure.
[30] Liu, Z., et al., Microstructural tailoring and improvement of mechanical properties in CuZr-based bulk metallic glass composites.
[44] Gargarella, P., et al., Phase formation and mechanical properties of Ti–Cu–Ni–Zr bulk metallic glass composites.

The reason is that in the scientific literature (for example [31-32]) are thermal properties of wood set only to approximately 100 °C.
Squares of the correlation factors were in all cases higher than 94%.
Galla: Determination of Fire and Burning Properties of Spruce Wood.
Torero: Determination of the flammability properties of polymeric materials: A novel method.
Zelinka: Moisture relations and physical properties of wood, in: Wood handbook (Forest Products Laboratory, USA 2010) [32] ZT.

Cross, Strength and corrosion properties of Portland cement mortar and concrete with mineral admixtures, in: Construction and Building Materials (2011). 25. 10.1016/j.conbuildmat.2011.03.011
[4] J Davidovits, Geopolymer Chemistry and Properties, Compiegne, France (1988): First European Conference on Soft Mineralurgy, pp. 2-48
Promentilla, Evaluating the thermal properties of geopolymer produced from red mud, rice husk ash, and diatomaceous earth: submitted to ASEAN Engineering Journal (2014).
Rafiza, The Effect of Curing Temperature on Physical and Chemical Properties of Geopolymers: in SciVerse ScienceDirect (2011), 22, 286-291
Soltaninaveh, The Properties of Geopolymer Concrete Incorporating Red Sand as Fine Aggregate, Curtin University of Technology, Australia (2008)

Improvement on Aerodynamic Characteristics and Drag Reduction for Supermileage Cars with Wide View Field Pey-Shey Wu1,a, Min-Jho Young2,b , Jun-Yun Wu1,c, Chia-Chian Wang1,d, Hao-Yu Hu2,e, and Chih-Fei Chang2,f 1Department of Mechanical and Automation Engineering, Da-Yeh University,Taiwan 2Department of Industrial Design, Da-Yeh University, Taiwan apswu@mail.dyu.edu.tw, byoungmj@mail.dyu.edu.tw, cdh100144790@yahoo.com.tw, dyunlintaiwan@gmail.com, egtogb77221@hotmail.com, fa91314000@hotmail.com Keywords: supermileage car, aerodynamic, rollover safety, drag, vortices.
Many factors may contribute to the total resistance, for examples, internal resistance of the engine, resistances in the power transmission chain, rolling resistance of wheels, and the aerodynamic drag due to relative motion between the vehicle and surrounding air.
Although these factors may have different levels of importance, for any car in competition, each factor should be carefully examined.
The property is the dynamic viscosity of air.
d) The body shape near the rear part of a car strongly affects flow separation phenomena, the pressure recovery on the rear surfaces, and the vortex structures in the wake.

The alteration demands considering all factors of the whole product life form the start to ensure the developed product to satisfy the customer needs, reach the quality goal, and come into market with expected cost as quickly as possible[3].
The key of technology integrated innovation is the selection and the interrelation of technology, but the existing integrated innovation methods focus on the factor of technology innovation from the point of inside of enterprise, ignore the function identification during concept design.
Second, there are gaps between the product property and customer desire.
To solve above problems, integration design should identifying the improve aspects according the customer and market developing trend as well as abridging the gap between product property and customer needs
It means that the input of influenced functions must be affected by the output of the influencing function when two functional requirements are interacted.

It was inferred that CMT process has lower heat input that results in finer microstructure and lower dilution in the Stellite 21 coating than the PTAW process due to volumetric dilution [11] Weld dilution is an unavoidable consequence of multi-material fusion processing that affects the full-field residual stresses via the equilibrium interaction between the stresses in the base and weld metals [12].
Grade 409L also has broad applications in industry like catalytic converter systems, automotive exhaust tubing and mufflers due to properties like ease of fabrication and corrosion resistance [19, 20].
Following factors were the criteria for selecting extreme values of the parameters: weld should be free of defects; weld should be free of spatter; weld should have stability during arc formation.
Amongst all interaction effects, the interaction effect between “Wire Feed Rate” and “Voltage” emerged out as the most dominating factor on weld dilution.
International Journal of Advanced Research in Mechanical Engineering & Technology (IJARMET) 2016: Vol. 2; Issue. 2, p. 24-27, 2016

A Review of Latent Heat Thermal Energy Storage Systems G.Murali 1, a *, K.Mayilsamy 2, b, B.Mubarak Ali 3, c 1,3 Department of Mechanical Engineering, Adhiyamaan College of Engineering, Hosur, Tamilnadu-635109, India. 2 Department of Mechanical Engineering, Institute of Road Transport and Technology, Erode, TamilNadu-638316, India.
The geometry of TES also affects the performance.
Tay et al. [15] carried out an experimental investigation of a tube in tank TES system filled with salt hydrate as PCM for cold storage applications and determined the influence of compactness factor (C.F).
It has been concluded that a suitable design must be chosen along with other thermal properties of PCM to have a better impact on the performance of the heat sinks.
Hence it is important that the design of the TES is in such a way that the melting and freezing process are improved and a proper PCM with required properties are selected for an active performance of the thermal energy storage.

Previous studies have discussed plantar pressures when running and performing other specific sports movements on different sports surfaces [2] [3] [9] [10] [12], identifying impact forces and lower extremity joint angle characteristics during running on different sports surfaces can help to reveal risk factors related to sports injury.
It is assumed that peak impact force can be reduced when acting on a surface having an increased cushioning property.
All subjects ran with the right foot step onto the AMTI force platform (Advanced Mechanical Technology Inc., Watertown, MA), which was fixed in the middle of the 10-meter walkway and utilized to collect the ground reaction force (GRF) at a frequency of 1000 Hz.
Biomechanical Factors Associated with Tibial Stress Fracture in Female Runners.
Footwear affects the gearing at the ankle and knee joints during running.

Introduction Ultrafine-grained and nanocrystalline materials offer particular promise for new and potentially very useful products since they can have very different and often superior properties that crucially depend on the atomistic details of interior or exterior interfaces [1, 2].
Thus, the resulting properties of such compacted nanocrystalline materials often need to be analyzed in the framework of composite models involving chemically and structurally dissimilar phases, in addition to taking the grain boundary volume as a structurally dissimilar but chemically equal phase into account.
Deformation processing of pure metals To study the grain refinement process at different stages of deformation including the limiting minimum grain size achievable by repeated cold-rolling, two fcc metals (Ni and Pd that have similar mechanical properties and thermal stability) have been repeatedly cold-rolled up to 110 RCR passes at room temperature starting from pure elemental foils.
Another possible contributing factor is the existence of a broad halo from amorphous fractions.
Dieter, "Mechanical Metallurgy", SI Metric Edition, McGraw-Hill, London-New York (1988) p.174