High-velocity micro-particle impact on gelatin and synthetic hydrogel. (October 2018)

• Record Type: Journal Article
• Authors: Veysset, David; Kooi, Steven E.; Мaznev, A.A.; Tang, Shengchang; Mijailovic, Aleksandar S.; Yang, Yun Jung; Geiser, Kyle; Van Vliet, Krystyn J.; Olsen, Bradley D.; Nelson, Keith. A.
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 86(2018)
• Page Start: 71
• Page End: 76
• Publication Date: 2018-10
• Subjects: High-velocity impact -- High-speed imaging -- Gelatin -- Hydrogel -- Penetration; Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2018.06.016
• Languages: English
• ISSNs: 1751-6161

Abstract

Abstract: The high-velocity impact response of gelatin and synthetic hydrogel samples is investigated using a laser-based microballistic platform for launching and imaging supersonic micro-particles. The micro-particles are monitored during impact and penetration into the gels using a high-speed multi-frame camera that can record up to 16 images with nanosecond time resolution. The trajectories are compared with a Poncelet model for particle penetration, demonstrating good agreement between experiments and the model for impact in gelatin. The model is further validated on a synthetic hydrogel and the applicability of the results is discussed. We find the strength resistance parameter in the Poncelet model to be two orders of magnitude higher than in macroscopic experiments at comparable impact velocities. The results open prospects for testing high-rate behavior of soft materials on the microscale and for guiding the design of drug delivery methods using accelerated microparticles.