Frequency Content of Cartilage Impact Force Signal Reflects Acute Histologic Structural Damage
نویسندگان
چکیده
منابع مشابه
Frequency Content of Cartilage Impact Force Signal Reflects Acute Histologic Structural Damage
OBJECTIVE The objective of this study was to determine if acute cartilage impact damage could be predicted by a quantification of the frequency content of the impact force signal. DESIGN Osteochondral specimens excised from bovine lateral tibial plateaus were impacted with one of six impact energies. Each impact force signal underwent frequency analysis, with the amount of higher-frequency co...
متن کاملA NEW DAMAGE INDEX FOR STRUCTURAL DAMAGE IDENTIFICATION BY MEANS OF WAVELET RESIDUAL FORCE
In this paper a new method is presented for structural damage identification. First, the damaged structure is excited by short duration impact acceleration and then, the recorded structural displacement time history responses under free vibration conditions are analyzed by Continuous Wavelet Transform (CWT) and Wavelet Residual Force (WRF) is calculated. Finally, an effective d...
متن کاملEffect of the frequency content of earthquake excitation on damage detection in steel frames
In this study, the effect of earthquake frequency content and noise effects on damage detection has been investigated. For this purpose, the damage was defined as nonlinear behavior of beams and columns, and several ground motion records were scaled so that some elements yield under the applied excitation. Then the acceleration response data of each floor obtained using the nonlinear dynamic an...
متن کاملContrast Enhanced Imaging of Cartilage Reflects Changes in Both Water and GAG Content
INTRODUCTION: Contrast enhanced imaging of articular cartilage is predicated on the use of anionic contrast agents that function as mobile ionic probes that partition themselves in inverse proportion to the glycosaminoglycan (GAG) content of the cartilage matrix. GdDTPA (charge -2, 548 g/mol) has been used for delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC) and Iox...
متن کاملStructural Damage Identification of Plate Structures based on Frequency Response Function and Natural Frequencies
In this paper, a structural damage identification method (SDIM) is developed for plate-like structures. This method is derived using dynamic equation of undamaged/damaged plate, in which local change in flexural rigidity is characterized utilizing a damage distribution function. The SDIM requires to modal data in the intact state and frequency response of damage state where most of vibration ba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: CARTILAGE
سال: 2012
ISSN: 1947-6035,1947-6043
DOI: 10.1177/1947603511430706