2022/03/07 by Laura A. Cobus, Cobus, Laura, Kasper van Wijk +1
Agricultural and Biological Sciences · Chemistry · #Applied Physics (physics.app-ph) #Biological Physics (physics.bio-ph) #FOS: Electrical engineering #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Instrumentation and Detectors (physics.ins-det) #Plant Surface Properties and Treatments #Postharvest Quality and Shelf Life Management #Signal Processing (eess.SP) #Spectroscopy and Chemometric Analyses #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2203.06118
openalex publication_date 2022/03/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The mechanical properties of a kiwifruit are investigated via non-contact acoustic measurements. Transmitted ultrasonic waves are measured using a static laser source and a rotating laser ultrasound detector. The measurements enable observation of a low-frequency surface wave and a higher frequency direct wave; combined with seismology-inspired theoretical modeling, these measurements enable estimation of several elastic parameters for inner and outer fruit flesh layers. Results indicate that the surface and direct wave velocities and the bulk and Young's moduli all evolve with fruit age/ripeness, while only the direct wave velocity and bulk modulus differ significantly between outer and inner fruit layers.