TY - GEN
T1 - Monitoring and quantifying crack-based light damage in masonry walls with digital image correlation
AU - Korswagen, Paul A.
AU - Rots, Jan G.
N1 - Accepted Author Manuscript
PY - 2021
Y1 - 2021
N2 - Recent, induced earthquakes in the north of the Netherlands have led to a large number of damage claims. Many claims can be considered to fall into the category of ‘light damage’ to the ubiquitous, unreinforced masonry structures in the region. To evaluate and predict the behaviour of cracks, characteristic of light masonry damage, caused by seismic or other actions, an experimental campaign, linked to the validation of computational models, has been pursued. To accurately capture the initiation of visible cracks, wider than 0.1 mm, Digital Image Correlation (DIC) was applied to monitor the entire surface of full-scale wall panels and smaller specimens. Moreover, an optimised speckle pattern and solving algorithm was developed to be able to monitor not only the initiation, but also the propagation of the cracks during subsequent (repeating) loading cycles. In this approach, the crack data is then used to characterise the intensity of damage with a single scalar; the parameter, denoted Ψ and comprising the number, width and length of the cracks, is used to evaluate the progression of light damage in experiments and finite element models. A description of the DIC technique applied and of the development and usage of the damage parameter for masonry is presented herein.
AB - Recent, induced earthquakes in the north of the Netherlands have led to a large number of damage claims. Many claims can be considered to fall into the category of ‘light damage’ to the ubiquitous, unreinforced masonry structures in the region. To evaluate and predict the behaviour of cracks, characteristic of light masonry damage, caused by seismic or other actions, an experimental campaign, linked to the validation of computational models, has been pursued. To accurately capture the initiation of visible cracks, wider than 0.1 mm, Digital Image Correlation (DIC) was applied to monitor the entire surface of full-scale wall panels and smaller specimens. Moreover, an optimised speckle pattern and solving algorithm was developed to be able to monitor not only the initiation, but also the propagation of the cracks during subsequent (repeating) loading cycles. In this approach, the crack data is then used to characterise the intensity of damage with a single scalar; the parameter, denoted Ψ and comprising the number, width and length of the cracks, is used to evaluate the progression of light damage in experiments and finite element models. A description of the DIC technique applied and of the development and usage of the damage parameter for masonry is presented herein.
KW - Cracks
KW - DIC
KW - Light damage
KW - Masonry
UR - http://www.scopus.com/inward/record.url?scp=85098245364&partnerID=8YFLogxK
U2 - 10.1007/978-981-15-9121-1_1
DO - 10.1007/978-981-15-9121-1_1
M3 - Conference contribution
AN - SCOPUS:85098245364
SN - 9789811591204
T3 - Lecture Notes in Civil Engineering
SP - 3
EP - 17
BT - Proceedings of 1st International Conference on Structural Damage Modelling and Assessment - SDMA 2020
A2 - Abdel Wahab, Magd
PB - Springer
T2 - 1st International Conference on Structural Damage Modelling and Assessment, SDMA 2020
Y2 - 4 August 2020 through 5 August 2020
ER -