Abstract: Modal analysis is a powerful technique for understanding the behavior and performance of structures. Modal analysis can be conducted via artificial excitation, e.g. shaker or instrument hammer excitation. Input force and output responses are measured. That is normally referred to as experimental modal analysis (EMA). EMA consists of three steps: data acquisition, system identificatio...

This study proposes a method to measure vibration mode shape on beam structures by using the elastic mechanoluminescent (EML) material SrAl2O4: Eu2+. The EML phenomenon has attracted interest due its potential for application strain distribution, crack visualization, and structural health monitoring. In this Letter, relationship between distribution of luminous intensity is explored found be qu...

The shape of the lumbar spine in the sagittal plane varies between individuals and as a result of postural changes but it is not known how the shape in different postures is related. Sagittal images of the lumbar spines of 24 male volunteers were acquired using a positional magnetic resonance scanner. The subjects were imaged lying supine, standing and sitting. An active shape model was used to...

Organizational Sel/-Dcsign (OSD) is a model o.[ Or.qanizalionai Change/rom lhe perspective of Distrib.ted Artificial lntelligenct’ (DAI). We present topdawn model of OSD its Ihr ,’ontext o] Cooperative Distributed Problem Sob,i, 9 {(’DPS). We emphasize the trssk cttvtrottmcttt its .it itttporlatH factor in detcrmitttut.I art cJJcctivc org, tli.’:,liottnl structure. We providv ,, ca:ample o/ ,n ...

We propose a novel method for performing point.feature correspondence based on a modal shape description. Introducing shape information into a low-level matching proc’ess allows our algorithm to cope easily with rotutions and translutions in the image plane, yet still give a dense correspondence. We also show positive results for scale changes and small skews, and demonstrate how reflectional s...

We propose a novel method for performing point-feature correspondence based on a modal shape description. Introducing shape information into a low-level matching process allows our algorithm to cope easily with rotations and translations in the image plane, yet still give a dense correspondence. We also show positive results for scale changes and small skews, and demonstrate how reflectional sy...

A. The three-dimensional spectral elasticity problem is studied in an anisotropic and inhomogeneous solid with small defects, i.e., inclusions, voids, and microcracks. Asymptotics of eigenfrequencies and the corresponding elastic eigenmodes are constructed and justified. New technicalities of the asymptotic analysis are related to variable coefficients of differential operators, vectoria...