"undamaged structure" is a correct and usable phrase in written English.
It can be used to describe a building or object that has not been affected or harmed in any way. Example: The earthquake left behind a trail of destruction, but luckily, our house remained standing as an undamaged structure.
Damage is identified by comparing the typical dynamic properties of the damage and undamaged structure.
Baseline data and theoretical models of the undamaged structure are not used during the analysis presented here.
However, it is very difficult, if not impossible, to obtain the baseline (information from the undamaged structure) for some structures.
The procedure operates solely on the mode shape from the damaged structure, and does not requirea prioriknowledge of the undamaged structure.
The enhancement of the bearing capacity of the damaged structure compared to the undamaged structure is evaluated in the pre- and post-cracking regime.
It is important to get statistical data for residual strength for both ultimate and limit allowables because the presence of damage will tend to make the coefficient of variation larger than what one can expect for undamaged structure.
They locate and estimate damage events by comparing dynamic responses between damaged and undamaged structures.
It is based on extracting a set of load vectors from flexibility shifts that cause the same deformation in damaged and undamaged structures.
The experimental results show that the flexural strain of damaged structures is much higher when compared with relevant undamaged structures under same bending load by using both EFPI and FBG sensors.
Structures that have significantly suffered damage from earthquake loads have lower fire resistance than undamaged structures.
As a result of expanding the dynamic orthogonality conditions, mass and stiffness perturbation matrices are formulated by the initial information of undamaged structures as well as the structure's modal parameters before and after the occurrence of damages.
