Grounding damage estimate through acceleration measurements
conference paper
Instantaneous insight into the structural damage sustained
by a ship running aground, can be of great aid in the decision
making following such a disaster. It should be possible to distil
the extent of structural damage from acceleration measurement
data of the entire vessel. Such measurements could possibly
even be done using a simple smartphone.
This paper describes experimental research exploring the
detection of plate rupture in a raking damage scenario by
merely looking at acceleration measurement data. Drop tower
experiments were performed, which reflect a realistic raking
damage scenario and also aim to gain better understanding of
both friction and failure in such a scenario.
In total four drop tests were performed. Ductile fracture
occurred without precedence of necking. A calibration method
for a failure criterion, using only one single strain-state, was
successfully applied. Separate friction tests showed that static
Coulomb friction seems to be a proper model to be applied for
the energy dissipation through friction. Moreover, the transition
to plate rupture can readily be detected from the experimental
acceleration data.
When accurate calibration of both the failure and the
friction is performed, it is envisaged that the extent of raking
damage can indeed be derived through real time acceleration
measurements on board of a vessel.
by a ship running aground, can be of great aid in the decision
making following such a disaster. It should be possible to distil
the extent of structural damage from acceleration measurement
data of the entire vessel. Such measurements could possibly
even be done using a simple smartphone.
This paper describes experimental research exploring the
detection of plate rupture in a raking damage scenario by
merely looking at acceleration measurement data. Drop tower
experiments were performed, which reflect a realistic raking
damage scenario and also aim to gain better understanding of
both friction and failure in such a scenario.
In total four drop tests were performed. Ductile fracture
occurred without precedence of necking. A calibration method
for a failure criterion, using only one single strain-state, was
successfully applied. Separate friction tests showed that static
Coulomb friction seems to be a proper model to be applied for
the energy dissipation through friction. Moreover, the transition
to plate rupture can readily be detected from the experimental
acceleration data.
When accurate calibration of both the failure and the
friction is performed, it is envisaged that the extent of raking
damage can indeed be derived through real time acceleration
measurements on board of a vessel.
TNO Identifier
772444
Article nr.
OMAE2017-61732
Source title
Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017,June 25-30, 2017, Trondheim, Norway
Pages
1-10
Files
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