Orthotropic Thermoelastic Problem of Uniform Heat Flow Disturbed by a Central Crack

Abstract

The linear thermoelastic problem of uniform heat flow disturbed by a central crack in an orthotropic plate is investigated using the techniques of Fourier Transforms and multiple integrations. The thermoelastic stresses and displacements in the crack plane are obtained in closed forms. The stress intensity factor is presented as a function of the material properties.

Damage-Survivable and Damage-Tolerant Laminated Composites with Optimally Placed Piezoelectric Layers

“…Chen [4] used a piezoelectric material to adjust the stiffness of the wires to control the response of a structure. Chen, Fanson, Caughey, Hanagud and Baily initiated experimental and theoretical research on smart beam type structures with piezoceramics as integral sensors and actuators [5][6][7][8][9]. Crawley showed that piezoceramic patches can be embedded in composite laminates to control a precision structure [10, 11].…”

“…Readers interested in this area may refer to books by Nye [8], Berlincourt et.al. [9], and Landau and Lifshitz [10]. A phenomenological description of the dynamic response of piezoceramics to an external electric field, including domain reorientation processes and the dynamics of dipole moment in each domain, has been developed by Chen et.al.…”

“…An alternative to surface bonding of the strain actuation material is to embed the material inside a composite structure (Crawley and De Luis [9]). The advantage of such embedding is that the load transfer from the actuation material to the host structure is enhanced and the surface of the structure is relatively free of fragile components and connections.…”

“…In the present case, if the signal has travelled long enough distance, the moving window approach may distinguish between the arrival time between frequency components. 9 The third window of the moving window approach (100-500 points)…”

Thermoelastic Analysis for Two Collinear Cracks in an Orthotropic Solid Disturbed by Antisymmetrical Linear Heat Flow

“…For example, the singularity of the stress fields near the crack-tip with a specified temperature or heat flux loading is studied by Sih [6]. The stress intensity factors of a central crack in an orthotropic material under a uniform heat flow are given by Tsai [7]. The thermoelasticity problem of two collinear cracks embedded in an orthotropic solid has been considered by Chen and Zhang [8].…”