Analiza sygnału emisji akustycznej z korowej tkanki kostnej obciążanej do złamania

• Autorzy: Zdunek A. , Trębacz H.

Warianty tytułu

EN

Analysis of acoustic emission signal from cortical bone loaded to fracture

• Konferencja: Badania Eksperymentalne w Mechanice Ciała Stałego (22; Sympozjum Mechaniki Eksperymentalnej Ciała Stałego; 18-21.10.2006; Jachranka, Poland)
• Języki publikacji: PL

Abstrakty

EN

Acoustic emission signals (AE) were recorded during the bending test of rat femora. Bones from two adult age groups were tested: five month (A-5) and 12 months old (A-12). Bones were loaded to fracture in three-point bending. Energy of AE, number of bursts and average energy for one burst were analyzed to maximum force and to final fracture. Qualitative and quantitative differences in AE signals between two age groups were found in quasi-plastic range of deformation, while in the whole test the differences were not present. Number and energy of AE bursts in quasi-plastic range was larger in the older than in the younger bones. The fact was attributed to a larger amount of AE sources and a larger probability of growth of microfractures within the tissue before the final fracture load was achieved. The data confirm that brittleness of healthy, mature bone tissue increases with age.

Słowa kluczowe

PL

emisja akustyczna; biomechanika

EN

biomechanics; acoustic emission

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Prace Naukowe Politechniki Warszawskiej. Mechanika
• Rocznik: 2007
• Tom: z. 217
• Strony: 145--150
• Opis fizyczny: Bibliogr. 10 poz., wykr., schem.

Twórcy

autor

Zdunek A.

autor

Trębacz H.

• Instytut Agrofizyki PAN Lublin,

Bibliografia

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• [2] Jonsson U., Eriksson K. (1984) Microcraking of dog bone under load. A biomechanical study of bone viscoelasticity. Acta Orthop. Scand. 55:441-445.
• [3] Martin RB (1991) Determinants of the mechanical properties of bones. J. Biomech 24 (Suppl.1): 79-88.
• [4] Parfitt A.M, (1993) Bone age, mineral density, and fatigue damage. Calcif. Tissue Int. 53 (Suppl. 1), S82-S86.
• [5] Ranachowski Z. Oprogramowanie do badania tekstury zbożowych produktów spozywczych, Works on Acoustical and Health Care Engineering, Polish Acoustical Soc., ISBN 83-916590-8-9, Krakow 2005.
• [6] Schaffler MB, Choi K, Milgrom C (1995) Aging and matrix microdamage accumulation in human compact bone. Bone 17(5): 521-525.
• [7] Schwalbe H J, Bamfaste G, Franke RP (1999) Non-destructive and non-invasive observation of friction and wear of human joints and of fracture initiation by acoustic emisssion. Proc. Instn. Mech. Engrs. 213(part H): 41-48.
• [8] Trębacz H, Zdunek A. (2006) Three-point bending and acoustic emission study of adult rat femora after immobilization and free remobilization. Journal of Biomechanics vol. 39: 237-245.
• [9] Zdunek A, Konstankiewicz K (2004) Acoustic emission in investigation of plant tissue micro-cracking. Trans. of the ASAE 47(4), 1171-1177.
• [10] Zdunek A, Bednarczyk J (2006) Effect of mannitol treatment on ultrasound emission during texture profile analysis of potato and apple tissue. Journal of Texture Studies 37, 339-359.