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Introduction Injection molded polymer parts always have internal stresses that affect their properties and dimensional stabilities.
The effective way to acquire the relaxation parameters of a polymer is to introduce the shift factor by means of WLF equation, which means that time and temperature are generally equivalent in affecting the relaxation modulus of polymers.
The WLF equation was proposed as an empirical expression for the shift factor and has been frequently utilized to model the temperature dependence of different polymers.
In addition, the properties of polymers, such as Young's modulus and viscos factor, always depend on the temperature, time and other processing conditions.
The instruction of internal stress development The mechanical characteristics of polymers are highly sensitive to the rate of deformation (strain rate), the temperature, and the time.

The measured shrinkage strains of hardening concrete - (the apparent shrinkage strain) depend on a number of factors that can be summarized in three groups.
The sand properties from volcanic tuff are presented in Table. 1.
The volcanic tuff sand properties
Other factors also affect the shrinkage of lightweight concrete: the increased content of cement paste and the finest fractions (less than 0.14 mm) in the composition of sand from natural porous rocks [9].
Piradov, Structural properties of lightweight concrete and reinforced concrete, Stroyizdat, Moscow, 1973

Effect of Produced Liquid Viscosity on Flow Characteristics and Separating Property of Downhole Hydrocyclone Desander Yuejuan Yan a, Zunce Wang b, Yanxu Shang, Sen Li, Yan Xu c Mechanical Science and Engineering College Northeast Petroleum University, Daqing, Heilongjiang, China ayanyuejuan@163.com, bwangzunce@126.com, cshangyanxu1990@126.com Keywords: Downhole hydrocyclone desander; Produced liquid viscosity; Flow field distribution; Separation property Abstract.
We know that downhole hydrocyclone desander is a statics hydrocyclone, the separation property of it is affected by separation medium viscosity greatly, even cause the separation failure.
Tangential velocity is important factor for the formation of centrifugal force.
It decides the separating property of downhole hydrocyclone desander.
It can also affect the size of particle classification.

Optimization of operation frequency in the evaluation of TBCs using microwave technique Yu’e YANG1 a ，Gaimei Zhang2 b 1.School of Mechanical Engineering, University of Jinan，Jinan, Shandong 250022, China 2.
Reflection coefficient is a function of various parameters such as, dielectric layer’s thickness, standoff distance, dielectric properties, operation frequency, etc.
When an in-contact inspection technique was applied for detecting and evaluating the characters of TBCs, the operation frequency is one of the major factors to affect the reflection coefficient.
Metallic BC thickness does not affect microwave signals, so, in this case, TC was deposited directly onto the metal substrate.
The reflection coefficient and its phase at the sensor aperture can be written as follows: (1) Fig. 2 The structures of rectangular waveguide probes (a) WR28, (b) WR18 (a) a b B A P (b) b B P a A When microwave signals travel within TC systems, the permittivity of the TC affect the electric field, thereby affecting the reflection coefficient.

Different surface structures of the metal tubes, such as sandblasting, knurling and laser structuring, were systematically tested regarding to their properties as an adhesion promoter.
In all of these processes, the surface properties achieved were optically surveyed in a non-destructive manner by means of the 3D laser measurement system Keyence VK 9700.
Statistical design of experiments was carried out both to minimise the number of tests and to recognise the potential interactions among the possible influencing factors.
Tempering of tubes does not significantly affect the bonding strength relating to shear strength.
Hage Jr., Mechanical and failure behavior of hybrid polymer-metal staked joints, Materials and Design 46 (2013), 338-347 [2] A.

The assessment of crack resistance is done using the stress intensity and crack width factors.
These factors will increase the accuracy of the tests as well as reduce their labor intensity.
Croccolo, Adhesives: Mechanical properties, technologies and economic importance, New York, Nova Science Publishers Inc, 2014
Liu, Determining stress intensity factors of composites using crack opening displacement, Composite Structures, 81 Issue 2 (2007) 614–621
Khansari, Investigation of composite coating effectiveness on stress intensity factors of cracked composite pressure vessels, Journal of Mechanical Science and Technology, 30 Issue 7 (2016) 3119–3126

The difference in moisture content partly affects the process and slaking product before slaking.
The slaking characteristic is one of the key factors in carbonaceous mudstone embankment filling.
The difference in moisture content partly affects the process and slaking product before slaking..
(in chinese) [2] ZHAO Minghua,LIU Xiaoming,SU Yonghua.Experimental studies on engineering properties of red material containing slaking rock[J].Chinese Journal of Geotechnical Engineering, 2005, 27(6); 667－671.
The water physical properties of the soft rock[J].

Adding strains to semiconductor materials affects semiconductors' physical properties and performance.
This research can broaden insights regarding the strain influence on the electronic properties of TiO2 anatase using DFT as a computational method.
This distortion can affect the material's properties, such as structural and electronic properties.
Fu, Electronic and Elastic Properties of the Tetragonal Anatase TiO2 Structure from First Principle Calculation, Optik. 206 (2020) 164342
Pandey, A Review on the Factors Affecting the Photocatalytic Degradation of Hazardous Materials, Mater.

The structural parameters of HEMs are the main factors which determine their vibration isolation characteristics.
Flower [3] explained the operation of inertia track and decoupler using a bond graphs mechanical method of the hydraulic mount.
Experimental data were used to show the effectiveness of the mount, and Flower showed that the hydraulic mount could meet two conflicting design criteria by exhibiting nonlinear dynamic properties.
Then the spectra of the test time-domain signals were analyzed and the dynamic properties, i.e., dynamic stiffness K* (complex spring rate), dynamic stiffness modulus K, dynamic stiffness in-phase (dynamic spring rate) k, loss angle φ (or loss tangent tan φ), dynamic stiffness out-of-phase (loss rate) k΄ and equivalent damping coefficient b were obtained:
Table 2 Test items and conditions Item Condition Static compression Compress 15 mm with velocity 10 mm/min and the greatest load is 4000N, then release, measure the force and displacement Dynamic characteristics test Static compress –1000 N, frequency 1–50 Hz, amplitude 1.5 mm, measure the response every 1 Hz The Methods for Obtaining the Lumped Parameters The methods for obtaining the lumped parameters and the exactness of the estimated parameters are critical to the simulated dynamic properties of an HEM.

Rangan, Factors Influencing the Compressive Strength of Fly Ash-Based Geopolymer Concrete, Civil Engineering Dimension, Vol. 6, No. 2, 88–93, September 2004, ISSN 1410-9530
Rice husk ash and fly ash effects on the mechanical properties of concrete. 
Effect of Sugarcane Bagasse Ash and Lime Stone Fines on the Mechanical Properties of Concrete. 
Enhancement of the mechanical properties of lightweight oil palm shell concrete using rice husk ash and manufactured sand.
Rice husk ash concrete: the effect of RHA average particle size on mechanical properties and drying shrinkage.