An experimental program to determine the mode I critical energy release rate (GIc) of the T650/AFR-PE-4/FM680-1 material system is reported. Two forms of GIc are determined over the range of 20 to 350 ◦C, the area method critical energy release rate GIc and the inverse method critical energy release rate (GIc). The value of GIc was found to increase with increasing temperature. The inverse meth...

A new algorithm for the computation of the spectral expansion of the eigenvalues and eigenvectors of a random non-symmetric matrix is proposed. The algorithm extends the deterministic inverse power method using a spectral discretization approach. The convergence and accuracy of the algorithm is studied for both symmetric and non-symmetric matrices. The method turns out to be efficient and robus...

The purpose of this study was to investigate the effect of high-cuff hiking boots on gait kinematics and lower extremity muscle activities compared with standard trekking shoes. 16 participants walked on a treadmill at 0°and 12° inclination uphill with both, a high-cuff hiking boot and a standard trekking shoe. Kinematics was collected with a 12 camera IR system. The activities of the mm. tib. ...

This paper presents a simple method based on strain energy density criterion to study the crack initiation angle by finite element method under biaxial loading condition. The crack surface relative displacement method is used to eliminate the calculation of the stress intensity factors which are normally required. The analysis is performed using higher order four node quadrilateral element. The...

We derive and implement boundary integral methods for axisymmetric liquid bridge problems in the presence of an axial electric field. The liquid bridge is bounded by solid parallel electrodes placed perpendicular to the axis of symmetry and held at a constant potential difference. The fluid is assumed to be nonconducting and has permittivity different from that of the passive surrounding medium...