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Online since: November 2010
Authors: Yao Xiao, Biao Wang, Ya Qing Lu, Cheng Jun Wang, Xi Hong Li, Yao Tang
The loss of DOP will affect the mechanical properties of the PVC product, and the migrated DOP will cause the contamination of environment as well as injuries to human health [1].
Tensile properties.
CaCO3-2/PVC behaved the most proximate mechanical properties to the neat PVC.
The effects of nano-particles aggregation on the properties of composites are clearly detrimental, which results in a drastic decrease of polymer mechanical properties [8].
Therefore, it is an effective approach to suppress the DOP migration through the addition of nano-particles, and the dispersion could be a dominating factor in this threshold to keep the favorable mechanical properties.
Online since: November 2006
Authors: Franco Furgiuele, Carmine Maletta, Marco Alfano
Interfacial Fracture Toughness of Adhesively Bonded Joints Marco Alfanoa, Franco Furgiueleb, Carmine Malettac Mechanical Engineering Department, University of Calabria, 87036 Rende, Italy a alfano@unical.it, bfurgiuele@unical.it, ccarmine.maletta@unical.it Keywords: interfacial fracture; adhesive bonded joints; complex stress intensity factor; energy release rate Abstract.
Traditionally the strength properties of adhesive bonded joints are assessed by standard test methods like the single lap joint test, the peel test, etc.
Each material is taken to be isotropic and linear elastic, in particular the material properties of the aluminium substrates are Young's modulus Es=70GPa and Poisson's ratio νs=0.33, while those of the adhesive are Ea=1.3GPa, νa=0.35 respectively.
Crack growth jumps and periodic load fluctuations do affect the resulting load versus crosshead displacement curve that presents a typical saw-tooth shape (Fig. 3).
After mechanical testing the fracture surfaces were optically analyzed in order to assess the locus of failure (Fig. 4).
Online since: February 2012
Authors: Kari Mäntyjärvi, Jussi A. Karjalainen, Jani Kantola
Abrasion resistant steels (ARS) offer excellent hardness and strength properties in applications as mining and earth moving machines.
Introduction Abrasion resistant steels (ARS) offer excellent hardness and strength properties in applications as mining and earth moving machines.
A well known fact is that heat treatments can be used to change material properties significantly.
Typical mechanical properties of the material are listed in Table 1.
Typical mechanical properties of ARS400.
Online since: September 2003
Authors: Y. Özçelik
The wearings on beads in two modes of vertical and horizontal cuttings are evaluated separetely and modelled as function of rock properties, machine and cutting characteristics.
For this purpose, the rocks of different mechanical properties in the field are cut horizontally and vertically by using the diamond wire cutting machines.
The physical and mechanical properties of the rock are determined in laboratory under ISRM [8] and T.S.E.
According to Table 4, the rock parameters namely the modulus of elasticity and specific gravity and the machine parameters namely the cutting time and energy and water consumption are the most important parameters affecting the bead wearing.
This methodology gives the comparative effects of the factors on wearing.
Online since: March 2012
Authors: Mitul B. Shil, P.K. Dan, A. Bandyopadhyay, J. Deb Barma
Mechanical properties such as tensile strength and hardness are considered to be the response parameters in the present study.
Olcay Ersel Canyurt [3] has developed the Genetic Algorithm welding strength estimation model (GAWSEM) to estimate the mechanical properties of the welded joint for the brass materials.
It is found that the number of variables included in the correlation equations may affect the correlation coefficients.
Data Analysis When the range of the series is too large, it will cause the influence of some factors to be ignored .The original experimental data must be normalized to eliminate such effect.
The factorial combination that minimizes CQL can be treated as optimal parametric combination/ most favorable process environment ensuring high mechanical properties like hardness value and tensile strength.
Online since: August 2007
Authors: Sung Mo Yang, Hee Yong Kang, Hyo Sun Yu, Su Rok Sin, Chai Won Kim
The welding quality of spot weldment is an important factor that significantly affects the strength, stiffness, safety, and other performance characteristics of vehicles.
Lim[3] estimated the fatigue life property of aluminum spot welding and Prof.
In this research, weldment life was estimated by considering the effect of the welding factor in the quasi static tensile shear test, which tests the fatigue life of a welding specimen to estimate of the welding property of a 2 and 3 lap spot welding specimen of high strength steel (HS40R).
Tables 1 ~ 3 display the chemical compositions, mechanical properties and spot welding conditions of HR40R.
Mechanical properties of base metals Material Steels Tensile stress (MPa) Yield stress (MPa) Elongation (%) HS40R 416.5 286.1 39 Table 3.
Online since: November 2015
Authors: T. Matsumura, Susumu Shimizu, Hiromi Fujiwara, Masanori Maruoka
The basic properties such as workability, mechanical properties and adhesion durability of the polymer cement mortar was firstly investigated.
Mechanical property.
Table 5: Flow values of the repair mortars PCM ASM PM Flow value (mm) 159 124 110 Mechanical property The mechanical properties of the repair mortars were shown in Table 6.
Furthermore, it was remarkable that the mechanical properties of ASM were very low.
It should be noticed to select the mortars to consider stress and deformation depending on the mechanical properties of the repair materials.
Online since: August 2009
Authors: Xin Min Fan, Jie Wen Huang, Dang Sheng Xiong
As is known, the value of Lc is affected by a number of extrinsic and intrinsic factors.
The extrinsic factors refer to the test parameters.
So it seems theoretically Lc is mainly determined by the intrinsic factors including the hardness of the substrate and the coating, etc[10].
These two factors both do favor to the adhesive performance.
The results show that the adhesive and the wear properties of the chromium coating could be promoted by the treatment.
Online since: January 2016
Authors: Azli Yahya, Norzahir Sapawe, Samion Syahrullail, Md Razak Daud
Good lubricants constantly depend on the chemical composition and mechanical properties
Indeed such wear laws were generally implemented in models with different characteristics (e.g. geometries, material properties or kinematic/loading conditions), so their results are not easily comparable.
The palm olein and kernel film layer on the contact as the main factor affected reducing wear and frictional rates.
Friction and wear properties of micro textured DLC coated surfaces in boundary lubricated sliding. 
Lubrication properties of trimethylolpropane esters based on palm oil and palm kernel oils. 
Online since: March 2011
Authors: Ruslizam Daud, Ahmad Kamal Ariffin, A.E. Ismail, A. Zulkifli, M.R.M. Akramin
Low back pain is a common musculoskeletal disorder affecting 80% of people at some point in their lives.
MCS, Taddei [7] was found that bone stresses and strains in the proximal femur were more sensitive to uncertainties in the geometric representation than material properties.
An anisotropic material exhibits different mechanical properties when loaded in different direction due to the structure of bone is different in the transverse and the longitudinal directions.
Therefore, this study was conducted on linear isotropic and assume that the whole vertebra considered as cortical bone properties.
Denote by X, is a vector of random variables with components X1, X2, ..., Xn represent the uncertainties in the load, material properties and geometry [13].
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