The mechanical behavior of cold rolled sheets is significantly related to residual stresses that arise from bending and unbending processes. Measurement of residual stresses is mostly limited to surface measurement techniques. Experimental determination of stress variation through thickness is difficult and time-consuming. This paper presents a closed form solution for residual stresses, in whi...

This article summarizes the development of wireless strain sensing systems for a variety of customer driven structural health monitoring (SHM) applications. By combining advanced, low power microprocessors, flexible software operating modes, and low power signal conditioners, these systems were optimized for very low power operation, while permitting high speed data logging and wireless communi...

Loading a specimen as shown in Figure 1a produces shear stresses in the material. An initially square element of the material, having vertical sides parallel to the direction of loading, is distorted by these stresses into a diamond shape as illustrated in Figure 1b, where the distortion is greatly exaggerated for pictorial clarity. Shear strain is defined as the magnitude of the change in the ...

The engineering design of structures using polymers requires a thorough knowledge of the basic principles of stress and strain analysis and measurement. Readers of this book should have a fundamental knowledge of stress and strain from a course in elementary solid mechanics and from an introductory course in materials. Therefore, we do not rigorously derive from first principles all the necessa...

INTRODUCTION The knee menisci are critical to the distribution of tibiofemoral contact stresses. This is demonstrated by the deleterious effects of injury or menisectomy on articular cartilage. Meniscus strains reflect load transfer and function in the normal and injured joint, and measurement of strain can be used to assess the efficacy of surgical repair techniques. However, in vivo measureme...

The mechanical behavior of cold rolled sheets is significantly related to residual stresses that arise from bending and unbending processes. Measurement of residual stresses is mostly limited to surface measurement techniques. Experimental determination of stress variation through thickness is difficult and time-consuming. This paper presents a closed form solution for residual stresses, in whi...