We are talking with Katarzyna Falkowicz about project titled: „Numerical and experimental studies of compressed composite plates with a central cut-out”.

What is the idea of a thin-walled plate element with central cut-out?

The idea of a thin-walled plate element with a central cut-out is to improve the resistance of the plate elements for the loss of stability by forcing the loss of structural stability according to a higher buckling form thanks to an innovative approach by testing asymmetric layer layouts in which there are coupling effects, and choosing those couplings that allow for the change of the structure buckling form. Thanks to this, we have an impact on shaping the stiffness characteristics of the structure and increasing the range of transferred loads. This property is very important in the operational aspect, because it is easy to obtain elements with identical dimensions for installation, and extremely different stiffness characteristics. Thanks to this, this element can work as an elastic or load-bearing element. 

What is the main purpose of project?

The scientific purpose of the project is to analyze the stability and post-critical states of compressed plate elastic elements with a cut-out and with variable geometric parameters, made of fibrous composites, as well as to investigate the influence of the composite layers arrangement on the post-critical characteristics of the elastic element and the value of the failure load. 

What research methods are used in the project?

The research are carried out with the used of various research methods, combining issues related to experimental research conducted on real composite structures and numerical calculations using the finite element method. In the experimental tests, the acoustic emission method was used to assess the state of the composite structure and to monitor the phenomena taking place during the loading process. In addition, during the test, the deformation of the plate was recorded using the optical ARAMIS system, where the displacement readings are made with two high-speed cameras placed on a special tripod. 

The study was conducted under Project UMO-2017/25/N/ST8/01066 financed by the National Science Centre Poland.

We wish you every success and good luck!

Sebastian Wach

https://rzeczo.pl/kompozytowe-plyty-z-centralnym-wycieciem/

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