Number that measures a material resistance to elastic (i.e., non-permanent) deformation when a force is applied to it. The elastic modulus of a material is defined as the slope of the stress–strain curve, of a specimen made of said material, in the elastic deformation region. A stiffer material has a higher elastic modulus. It is also called Young’s modulus.
Published in Chapter:
Emerging Technologies for the Seismic Assessment of Historical Churches: The Case of the Bell Tower of the Cathedral of Matera, Southern Italy
Antonella Ragone (Sapienza University of Rome, Italy),
Alfonso Ippolito (Sapienza University of Rome, Italy), Domenico Liberatore (Sapienza University of Rome, Italy), and Luigi Sorrentino (Sapienza University of Rome, Italy)
Copyright: © 2017
|Pages: 38
DOI: 10.4018/978-1-5225-0675-1.ch006
Abstract
Historical churches have shown a dramatic vulnerability in several recent earthquakes, especially when they are adjacent to bell towers. Due to their great number and their societal relevance, low cost and nondestructive survey and investigation procedures are necessary for the seismic assessment. Accurate and fast geometric models can be obtained through digital photo-modeling, and they are the base for finite element models. These models can be updated through ambient vibration testing, which delivers a robust estimate of the fundamental period of the building especially in the case of cantilever-like bell towers. Elastic modulus and boundary conditions can be evaluated through numerical and physical comparison, provided that in situ sampling suggests a masonry density value. Then, compressive strength can be estimated, yielding a more robust seismic assessment. The proposed procedure is applied to the Cathedral of Matera, Southern Italy.