Thermal stress impacts various engineering fields significantly, such as aerospace and precision instruments. This adverse effect can be greatly reduced, if not eliminated, by the application of micro-thermal expansion materials, and bi-material beams are widely utilized in the design of micro-thermal ...
Thermal expansion of solids is extensively exploited in engineering; for example, bimetallic strips are bent due to different CTE values of the metals used in the strip, while shrink fitting is used to join different structural components. This is of paramount importance in welding or when the ex...
Tg—both of which are important measures when the material dramatically changes its structure and characteristics; the maximum and minimum service temperatures that bound the useful design range, Tmax and Tmin; the specific heat capacity, Cp; the linear thermal; and the expansion coefficient, thermal...
Controlling the thermal expansion of materials is of great technological importance. Uncontrolled thermal expansion can lead to failure or irreversible destruction of structures and devices. In ordinary crystals, thermal expansion is governed by the asym
The second example is a 3D metamaterial based on an octet truss, with additional members to expand the design space. A multi-objective optimization problem is solved to find the optimal trade-off between Young’s modulus and thermal expansion coefficient in a prescribed direction. The results of...
Those design variables which have significant effects on the structural characteristics of the U-tube are identified by an in-depth study of a typical example problem. Some effective design remedies are also discussed.关键词: Thermal expansion Stress Heat exchangers Shells Design Stress concentration ...
For most oxides the thermal expansion coefficient is low compared to that of most metals and it has to be taken into account because they are often used at high temperature. Alumina Al2O3 (T m = 2,050 °C) Main problem: Starting from α phase, melting and fast cooling (spraying)...
X2 free piston-driven expansion tube: up to 10.3 km/s; (iii) X3 expansion tube: up to 10 km/s. These three facilities can reach velocities in the range of superorbital Earth re-entry; they have been successfully used in the frame of an ESA TRP [...
Transmission expansion planning of systems with increasing wind power integration. IEEE Trans. Power Syst. 2013, 28, 1355–1362. [Google Scholar] [CrossRef] Ketabi, A.; Fini, M.H. An underfrequency load shedding scheme for hybrid and multiarea power systems. IEEE Trans. Smart Grid 2015, 6...
Carbon-based materials are attractive additives for the fabrication of advanced PCCs owing to their high thermal conductivity, chemical stability, low thermal expansion, and wide availability [268,269]. Carbon-based materials have various morphological structures, which can be classified as one dimensiona...