Search results

The main objective is to extract the common factors involved in contractual conflicts.
The reasons, either financial or related to project management policies, will be listed, which will help restrain these factors in future projects.
The significant factors in any project are mostly the inflation rates, design errors, and changes in government laws, regulations, and policies that can affect the project, and sometimes it also changes the project scope [3].
The paper showed the importance of discussions during pre- and post-contracting to eliminate the factors that can cause delays in international projects.
Manzoor, “Enhancing the Mechanical Properties of Concrete and Self-Healing Phenomena by adding Bacteria, Silica fume and Fibers” Sustainable Structures and Materials, vol.

Adhesion is another significant factor affecting performance of polyurea coating.
However, the interface adhesion is highly affected by a myriad of complicated conditions including material properties, construction conditions, the application method, the quality of concrete substrate, and the way in which the concrete substrate was prepared for surface preparation system.
Therefore, it is essential to study the influences of these critical factors, in order to design more reliable coating system and improve the protective performance.
It provided comprehensive solution for Beijing-Shanghai high speed railway waterproof membrane application in myriad climatic factors of changes.
(4) Although both E1 and E2 surface preparation system were epoxy based, their properties and performance were different

The main body and influencing factors of filtering effect are obtained.
Introduction Activated carbon fiber has a large specific surface area, suitable micropore structure, reactivation and strong adsorption properties.
Finally, Calculate the water content M with the formula: M=(m1- m2)/ml×100％ In the process of pre-oxidation, the three main factors that affected the pre-oxidation degree were pre-oxidation temperature, time and airflow speed.
Table 1 is about four levels of the three factors.
Regardless of the interaction between the three factors, the orthogonal experiment table L(43) was designed according to the literature and the results can be viewed in Table 2.

Over decades, lots of research works on classical torispherical and ellipsoidal heads have been carried out from the perspective of mechanical properties and forming.
Due to the disadvantage of the classical heads in mechanical properties and forming, this paper presents a novel parabola-arc-shaped head with the distinctive improvement on better mechanical properties, easily forming and less material cost.
Finite Element Modeling Material properties.
When the middle diameter and thickness are the same, the mechanical property of pressure vessel with ellipsoidal head is the best, with the novel parabola-arc-shaped head comes second and the torispherical head worst performed. 2.
According to the present analysis, the mechanical property of pressure vessel with the novel parabola-arc-shaped head is better than that with torispherical head.

In fact, the values of k1​{TTP}8203 ​{TTP}8203 and k2 are affected by many factors, such as equation (1).
References [1] Zhao Gengxian, in: Ship vibration-one of key design factors for ship and offshore structure [J].
Ship & Boat. 2001, (5): 34-42 [2] Zhao Ying-long, He Lin and Lu Zhi-qiang, in: The application of DDAM on the computation of shock response of marine floating raft vibration-isolating system [J]. 2007, 24(4): 159-167 [3] Wang Guo-zhi, Zheng Xue-gui, in: Design of vibration isolation device with floating raft for pump sets in ship and research on its dynamic properties [J].
Journal of Marine Science and Application. 2009, (8): 291-297 [5] Tian Zheng-dong, Yao Xiong-liang and Shen Zhi-hua, et al, in: Mechanical behaviors of a marine vibration-reduction and shock-resistant isolator based on MR [J].

Dimensional quality is an important factor influencing the final geometry for the compliant assemblies.
Problems with dimensional tolerance can affect the product functionality, the process performance and the aesthetical requirement.
There are mainly three factors influencing the dimensional tolerance, which are design concept, variation and process layout [1].
The assembly is described by an assembly modeling with multi-properties, which includes three sections: (1) the set of parts of the assembly, (2) the set of relationships among parts and (3) the set of joints among parts.
Chen: Journal of Mechanical Design, Vol. 127(2005), p. 347

Zhao 1,d 1 Dept. of Mechanical Engineering, Harbin Institute of Technology, Harbin, China a wangzl@hit.edu.cn, bcuijingzhitt@hotmail.com, cliuxf@hit.edu.cn, dzws@hit.edu.cn Keywords: Electric discharge machining, Electrode material removal, Mathematic model Abstract.
The problem of thermodynamic model of electrode material removal under single spark discharge is described as below: 2 2 2 2 1 T T T a t r z ∂ ∂ ∂ = + ∂ ∂ ∂ (2) Where, α is the coefficient of thermal diffusion of electrode material, T is the temperature difference between thermal affect region and base material, t is discharge time, r is radius of thermal affect region, and z is the depth of thermal affect region.
So in short pulse duration, electrostatic force is one of key factors to remove the material.
In order to simplify the calculation the following assumptions are given: (1) The temperature distribution of the discharging channel is steady and heat flow density is constant. (2) Except for the yield strength, the properties of the material do not change with it's temperature. (3) As the discharge time is very short, the electrode is semi-infinite. (4) In the spark channel, there is no variation in potential ion; electron densities and ion velocity in the radial direction.

Finally, the experimental results demonstrate how inline solution annealing by induction heating for the W-Temper process affects the properties and the quality of the profiles produced.
The quenching process is of great importance as the mechanical properties of the AA7075 alloy are sensitive to quenching [3].
The mechanical properties are sufficient for the W-Temper-process and close to the desired T6-condition after forming and aging.
The main cost factors for the process routes from manufacturing side are the time and required temperature for heat treatment.
Nürnberger, Mechanical properties and formability of EN AW-7075 in cold forming processes, IOP Conf.

Due to the nature of the aggregate, the mechanical properties may also be reduced [19, 20]
In Sun's research [5], samples prepared from natural aggregate and alkali-activated MK together with GBFS achieved better mechanical properties and water permeability than PCC.
Although fine aggregate causes a reduction in porosity, it also contributes to an increase in mechanical properties [25] and frost resistance.
Finally, the polymer dispersion was intended to improve mainly the mechanical properties of the concrete; it was used with CEM II/A-S 42.5 R as a 5% addition by weight.
Wu, Mechanical strengths and durability properties of permeable concretes with blended steel slag and natural aggregate, Journal of Cleaner Production, 271 (2020), 122590

With this basic configuration, the effects of lightweight materials with different density and elasticity on the oscillation and damping properties in blanking tools can be studied.
Several mechanical properties of the materials used can be seen in Table 2.
Table 2: Nomenclature and mechanical properties of plate-materials nomenclature Rp0.2 [N/mm²] Rm [N/mm²] Density [t/m³] Modulus of elasticity [N/mm²] Steel C45 1.0503 ca. 305 ca. 580 7.85 210 000 Alu Certal 3.4345 ca. 490 ca. 545 2.76 72 000 Mg AZ31 3.5312 ca. 165 ca. 240 1.77 45 000 Tool Steels.
To reduce the influencing factors there is no coating used on the punches.
These impacts in the top plate affect the force sensor in a direct flux of forces via the upper trust plate.