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This system can be applied to extremely cold region. 1 Introduction Long-scale prestressed concrete (PSC) continuous box-girder bridges are universally undergoing the overlarge deformation and cracks with the shortage lifecycle due to long-term overload, loss of prestress and environmental factors.
Temperature is the most common environmental factor which can influence the modal parameter and deformation [9].
The basic principle of HLS is the communicating tube theory--using the property that liquid in interconnected container always desires to keep on the same plane.
The climate feature: four distinct seasons and sunlight and seasonal temperature difference, seriously affects the measurement results.
Scott, et al, Environmental Variability of Modal Properties, Exp.

Introduction Concrete is traditionally modeled as a two-phase composite material, consisting of aggregate particles and a cement paste matrix, to explain its overall physical properties.
This fact implies that the ITZs in concrete can have a significant effect on the physical properties of concrete [3].
It has been found that the inclusion of aggregate in the hydrated cement paste matrix has two opposite effects on the transport properties.
The test results indicate that aggregates modify the mesostructure and the transport properties of mortars.
Although there are many factors that may affect the distribution of aggregates in concrete, such as placement and compaction, standard practice of concrete construction requires uniformity and consistancy in concrete making.

In this way, the volume of work for the final mechanical processing of the loaded surfaces is reduced and thus the reconditioning activity becomes even more efficient.
In addition to technical and comfort issues related to public transport, an important issue is noise and vibration pollution, which is one of the factors particularly harmful to human life and activity.
The high values of the noise level are largely due to the following factors: wear and tear and unevenness of the rail, pronounced wear of metal parts in dynamic contact, change of direction of travel at line intersections, change of travel speed.
In this way, the volume of work for the final mechanical processing of the loaded surfaces is reduced and thus the reconditioning activity becomes even more efficient.
The system will ensure the control and maintenance of the bandage temperature during the loading process at values that do not affect the integrity of the rubber shock absorbers and the prescribed properties of the base material - deposited material assembly.

The Study of Dynamic Simulation on Five Axis CNC Machine Yi-Ming Lee1,a, Kuei-Shu Hsu2,b, and Shyue-Bin Chang1,c 1Department of Mechanical and Automation Engineering, Kao Yuan University, Taiwan, ROC. 2Department of Applied Geoinformatics, Chia Nan University of Pharmacy & Science, Taiwan, ROC.
This study offers the possibility of doing error analysis by simulating against the affect of strain/stress as cutting force applied at different angle to the work piece.
Literature Review The operation method factor includes thermal strain, structure stress/strain and etc.
In this approach, the existing parameters of material property can be input in order to make the virtue machine as real as possible.

Left inset embodies the polar response of the normalized piezoelectric behavior for different anisotropy factors.
On the influence of obstacles arranged in rectangular order upon the properties of the medium.
Properties of anisotropic piezoactive polycrystals.
Effective properties of ferroelectric and/or ferromagnetic composites: a unified approach and its applications.
Atomistic study of structural, elastic, electronic and thermal properties of perovskites Ba(Ti, Zr, Nb)O3.

Various factors, such as strength of rock masses, initial stress, sectional size and shape of entry, heading approaches and supporting ways and parameters, totally determined scope of EDZ.
Combined testing principle Mono-hole Ultrasonic Wave Experiment Mono-hole ultrasonic wave experiment for detection of EDZ takes full advantages of ultrasonic property.
Relationship between propagation parameters of ultrasonic in rock masses and physical and mechanical properties of rock structure is basic for the in-situ monitoring.
In particular velocity and amplitude attenuation has a great contact with structure properties and crack development in similar rock masses.
The waves produce reflection and refraction while encountering special rock structures like fractures, joint, broken which would cause remarkable changes in its own conductive characteristics and affect properties of the electromagnetic wave propagation.

Preparation of Nano Carbon Black/Epoxy Composite by Frontal Polymerization Zhuo CHEN1,2,a, Peng LIU2,b, Lei SHI2,c, Zhi-Xiong HUANG3,d and Bing-Yan JIANG1,2,e,* 1School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; 2School of Aeronautics and Astronautics, Central South University, Changsha 410083, China 3School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, China acz2009@csu.edu.cn, blpaijun@126.com , cshileibetter@gmail.com, dzhixiongh@whut.edu.cn, e jby@csu.edu.cn *Corresponding author Keywords: frontal polymerization, epoxy resin, nano carbon powder, composite.
In this research, nano carbon-black was used as filler to improve the electrical property of epoxy resin.
The amount of hardener is a key factor which effects the reacting front propagating velocity, the minimum amount of DETA required for the reacting front propagating through test tube is 8wt% of epoxy resin.
The heat may affect the quality of the material, especailly when air bubble existed, or even damage the test tube.

The stacking sequence of plies affects the overall stiffness and failure properties of the designed structure.
Modelling of laminate failure is often endeavoured on the mesoscale, where a laminate is considered to be consisting of homogeneous plies, each with orthotropic properties that depend on the fibre orientation.
Effect of stacking sequence is focused particularly on the 90° ply thickness which mostly affects the transverse cracks initiation and propagation. 2.
Baptiste Mechanical Engineering Publications, London (1991) [23] P.
Baptiste Mechanical Engineering Publications, London(1991) [34] O.

Adsorption was recognized for its economic viability, technological effectiveness, thermally stability, corrosion resistance, high load capacity, and tunable surface properties.
The adsorption methods offered numerous advantages, comprising relatively high thermal stability, corrosion resistance, high loading capacity, and adjustable surface properties [7].
Several factors influenced the adsorption process, such as adsorbate concentration, pH, contact time, and temperature [90].
Silica nanoparticles offer numerous advantageous properties, including a large surface area, excellent heat resistance, high mechanical strength, and inertness, making the nanoparticles ideal for catalyst precursor, adsorbent, and composite filter [17].
Eliche-Quesada, ‘Effect of olive-pine bottom ash on properties of geopolymers based on metakaolin’, Materials, vol. 13, no. 4, Feb. 2020, doi: 10.3390/ma13040901

Reference [2] studied the optimum design of the planetary gear drive of mechanical spindle speeder for high-speed machine tool.
(2) The EMI directly affects the energy consumption of the drive motor, especially for the gearbox of frequent start-up and braking.
The purpose of structural topology optimization is to seek the optimum distribution of structural stiffness or the optimum force transmission route of the structure within a given design space, so as to optimize some properties or reduce the weight of the structure.
The material properties of the discrete elements are defined as constant, and the relative densities of the discrete elements xe (where e is the element number) are defined as design variables.
And assume that E0 and E are respectively the Young's modulus of the initial and optimized element, k0 and k are respectively the stiffness matrix of the initial and optimized element, then E=(xe) pE0, k=(xe) pk0, where p is penalty factor p>1.