Prediction of the Durability of Composite Soft Ballistic Inserts

• Autorzy: Fejdyś M , Cichecka M , Landwijt M , Struszczyk M

Warianty tytułu

PL

Prognozowanie trwałości kompozytowych miękkich wkładów balistycznych

• Języki publikacji: EN

Abstrakty

EN

The main goal of this research was to develop a method of predicting the durability of soft ballistic inserts made of a high-strength composite based on polyethylene ultra-high molecular weight (UHMWPE) fibres. The research presents a program of tests on the simulated use of composite ballistic inserts elaborated in order to predict the durability as well as changes in the ballistic, physical and mechanical properties occurring due to conditions of use. The research program took the following three procedures of the aging simulation of the ballistic inserts into account: procedure 1 – applying a mechanical load to the insert; procedure 2 – applying a mechanical load along with a temperature cycle to the insert; procedure 3 – applying a mechanical load, temperature cycle and liquid solution simulating human perspiration to the insert. The procedures were verified experimentally by examining inserts made out of soft composite polyethylene Dyneema® SB 21. Also verification by means of the Snedecor’s F-test was carried out. It was shown that the effect of mechanical loading, temperature cycling, and the solution simulating human perspiration influences the progress of degradation of the polyethylene material. The research work included testing new ballistic inserts made of a polyethylene composite, as well as ones subjected to simulation ageing. To investigate the correlation between the natural ageing process and the simulated one, ballistic inserts used under natural conditions for 5, 7, 9 and 13 years were examined. Selected samples were used for the determination of mechanical and ballistic property variation as well as changes in their chemical structure. Changes in the microstructure of the ballistic material were assessed by DSC analysis and infrared spectroscopy (FTIR-ATR).

PL

Głównym celem realizowanych prac było opracowanie metody prognozowania trwałości miękkich wkładów balistycznych wykonanych z wysokowytrzymałego kompozytu na bazie polietylenu o bardzo dużym ciężarze cząsteczkowym(UHMWPE). W artykule przedstawiono program badań symulacji użytkowania kompozytowych wkładów balistycznych, który opracowano celem prognozowania trwałości, a tym samym przewidywania zmian parametrów balistycznych, fizyko-mechanicznych wkładów ochronnych, zachodzących pod wpływem warunków eksploatacji. Wnioskowanie odnośnie zmian stanu technicznego wyrobów balistycznych pod wpływem warunków przechowywania i użytkowania wymagało zweryfikowania opracowanej metodyki badawczej i przeprowadzenia badań uwzględniających metodę przyspieszonego starzenia. W ramach pracy badaniom poddano nowe pakiety balistyczne wykonane z kompozytu polietylenowego, jak również poddane starzeniu laboratoryjnemu. Celem zbadania korelacji między procesami starzenia naturalnego i symulowanego zbadano pakiety balistyczne użytkowane w warunkach naturalnych przez 5, 7, 9 i 13 lat. Dla wytypowanych próbek zostały przeprowadzone badania właściwości mechanicznych i balistycznych oraz zmian ich struktury chemicznej. Zmiany w strukturze materiałów balistycznych oceniono za pomocą metod: analizy termicznej DSC, spektroskopii w podczerwieni (FTIR-ATR).

Słowa kluczowe

EN

simulation of use; accelerated ageing; ballistic protection; bullet-proof vests; fragment-proof vests; ultra-high molecular weight polyethylene; crystallinity

PL

symulacja użytkowania; przyspieszone starzenie; ochrona balistyczna; kamizelki kuloodporne; polietylen o bardzo wysokiej masie cząsteczkowej; krystaliczność; miękkie wkłady balistyczne

• Wydawca: Sieć Badawcza Łukasiewicz - Łódzki Instytut Technologiczny
• Czasopismo: Fibres & Textiles in Eastern Europe
• Rocznik: 2014
• Tom: Vol. 22, no. 6 (108)
• Strony: 81--89
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Fejdyś M

• Institute of Security Technology MORATEX, Łódź, Poland

autor

Cichecka M

• Institute of Security Technology MORATEX, Łódź, Poland

autor

Landwijt M

• Institute of Security Technology MORATEX, Łódź, Poland

autor

Struszczyk M

• Institute of Security Technology MORATEX, Łódź, Poland

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