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1

Windartik, Emyk, Ima Rahmawati, Ita Ainun Jariyah, Raras Merbawani, Indah Lestari, Ifa Ro’ifah, and Arief Andriyanto. "The Degree of Diabetic Wounds Affects Kidney Function Damage." Nurse Media Journal of Nursing 9, no. 2 (December 27, 2019): 159–66. http://dx.doi.org/10.14710/nmjn.v9i2.24210.

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Background: The peripheral neuropathy is the cause of hospitalization for patients with diabetes mellitus (DM) and damages kidney function due to the circulatory system with high sugar levels. High sugar levels in DM patients with diabetic wounds can trigger glomerular damage resulting in the decrease of kidney function.Purpose: This study aims to analyze the relationship between the degree of diabetic wounds and kidney functions in patients with DM.Methods: A cross-sectional study was conducted on 723 DM patients who experienced diabetic wounds in a hospital in Mojokerto, East Java, Indonesia
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Kim, Moon-Jeong, and Hee-Chang Eun. "Identification of damage-expected members of truss structures using frequency response function." Advances in Mechanical Engineering 9, no. 1 (January 2017): 168781401668791. http://dx.doi.org/10.1177/1687814016687911.

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A damaged member in a truss structure leads to a variation in the initial responses of its adjacent members. A flexibility-based approach extracting from the modal data should be implemented as one of the structural damage detection methods. The frequency response function data as dynamic measurements provide more information on the system characteristics compared with modal data. Proper orthogonal modes from the frequency response functions extracted in the given frequency ranges and their modified forms can be utilized as damage indices to detect damages. This study considers damage detectio
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Yang, Tian-qun, Yuichi Majima, Yongqing Guo, Teruhiko Harada, Takeshi Shimizu, and Kazuhiko Takeuchi. "Mucociliary Transport Function and Damage of Ciliated Epithelium." American Journal of Rhinology 16, no. 4 (July 2002): 215–19. http://dx.doi.org/10.1177/194589240201600407.

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The influence of epithelial damage on mucociliary transport was studied in relation to the amount of mucus. The mucosal epithelium of mucus-depleted frog palate was dissected and mounted on a plastic plate. Mechanical damages were created on the frog mucosa by pressing a different thickness of boards (2, 3, 5, and 8 mm). Two different amounts of frog mucus (7.9 L [small amount of mucus {S-mucus}]) and 51.0 L [large amount of mucus {L-mucus}])were applied on the frog mucosa with and without mucosal damage. There was no difference in mucociliary transport rate (MTR) on undamaged frog mucosa betw
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Zhang, Wei, Limin Sun, and Liye Zhang. "Local damage identification method using finite element model updating based on a new wavelet damage function." Advances in Structural Engineering 21, no. 10 (December 27, 2017): 1482–94. http://dx.doi.org/10.1177/1369433217746837.

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As the number of unknown parameters in a finite element model updating problem increases, the challenges in finding reliable and meaningful updating result surges. Although traditional damage functions have illustrated an excellent ability in reducing unknown parameters, they are imprecise for identifying local damages. To solve this problem, a new type of damage function termed the wavelet damage function, which specializes in local damage identification, is proposed in this article. It utilizes the properties of the Haar wavelet and wavelet multi-resolution analysis. During the wavelet damag
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Boettle, M., J. P. Kropp, L. Reiber, O. Roithmeier, D. Rybski, and C. Walther. "About the influence of elevation model quality and small-scale damage functions on flood damage estimation." Natural Hazards and Earth System Sciences 11, no. 12 (December 19, 2011): 3327–34. http://dx.doi.org/10.5194/nhess-11-3327-2011.

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Abstract. The assessment of coastal flood risks in a particular region requires the estimation of typical damages caused by storm surges of certain characteristics and annualities. Although the damage depends on a multitude of factors, including flow velocity, duration of flood, precaution, etc., the relationship between flood events and the corresponding average damages is usually described by a stage-damage function, which considers the maximum water level as the only damage influencing factor. Starting with different (microscale) building damage functions we elaborate a macroscopic damage f
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Matsuoka, Masashi, and Miguel Estrada. "Development of Earthquake-Induced Building Damage Estimation Model Based on ALOS/PALSAR Observing the 2007 Peru Earthquake." Journal of Disaster Research 8, no. 2 (March 1, 2013): 346–55. http://dx.doi.org/10.20965/jdr.2013.p0346.

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With the aim of developing a model for estimating building damage from synthetic aperture radar (SAR) data in the L-band, which is appropriate for Peru, we propose a regression discriminant function based on field survey data in Pisco, which was seriously damaged in the 2007 Peru earthquake. The proposed function discriminates among damage ranks corresponding to the severe damage ratio of buildings using ALOS/PALSAR imagery of the disaster area before and after the earthquake. By calculating differences in and correlations of backscattering coefficients, which were explanatory variables of the
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Ruilope, Luis M. "Arterial Function and Cardiorenal Damage." Journal of Clinical Hypertension 16, no. 6 (April 25, 2014): 398. http://dx.doi.org/10.1111/jch.12318.

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8

NINIC, D., and H. STARK. "A multiaxial fatigue damage function." International Journal of Fatigue 29, no. 3 (March 2007): 533–48. http://dx.doi.org/10.1016/j.ijfatigue.2006.04.003.

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9

Dackermann, Ulrike, Wade A. Smith, Mehrisadat Makki Alamdari, Jianchun Li, and Robert B. Randall. "Cepstrum-based damage identification in structures with progressive damage." Structural Health Monitoring 18, no. 1 (October 16, 2018): 87–102. http://dx.doi.org/10.1177/1475921718804730.

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This article aims at developing a new framework to identify and assess progressive structural damage. The method relies solely on output measurements to establish the frequency response functions of a structure using cepstrum-based operational modal analysis. Two different damage indicative features are constructed using the established frequency response functions. The first damage feature takes the residual frequency response function, defined as the difference in frequency response function between evolving states of the structure, and then reduces its dimension using principle component an
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Zhao, Jie, Hans DeSmidt, and Meng Peng. "Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor." Shock and Vibration 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/4056236.

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This paper proposes a vibration-based damage identification method based on 6-dof Jeffcott rotor system, which is based on harmonic balance and Newton-Raphson methods. First, the equations of motion are derived by using energy method and Lagrange principle. The crack model is based on strain energy release rate (SERR) in fracture mechanics and modified to accommodate 6-dof Jeffcott rotor model. Then, Gear’s method is used to solve the vibration responses of nominal and damaged rotor systems. By processing vibration responses, the transfer function shifts between nominal and damaged systems are
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Chusilp, Pawat, Weerawut Charubhun, and Pattadon Koanantachai. "Monte Carlo Simulations of Weapon Effectiveness Using Pk Matrix and Carleton Damage Function." International Journal of Applied Physics and Mathematics 4, no. 4 (2014): 280–85. http://dx.doi.org/10.7763/ijapm.2014.v4.299.

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12

Tan, D., ZR Lu, and JK Liu. "A two-step method for damage identification in beam structures based on influence line difference and acceleration data." Advances in Mechanical Engineering 10, no. 7 (July 2018): 168781401878740. http://dx.doi.org/10.1177/1687814018787404.

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This article presents a two-step approach for structural damage identification in beam structure. Damages are located using the influence line difference before and after damage, the calculation of damage severity is accomplished by acceleration data and bird mating optimizer algorithm. Local damages are simulated as the reduction of both the elemental Young’s modulus and mass of the beam. The technique for damage localization based on displacement influence line difference and its derivatives for beam structure has been outlined. An objective function that comprises dynamic acceleration is ut
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Gerist, Saleheh, and Mahmoud R. Maheri. "Structural damage detection using imperialist competitive algorithm and damage function." Applied Soft Computing 77 (April 2019): 1–23. http://dx.doi.org/10.1016/j.asoc.2018.12.032.

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14

Hou, Yanfang, Weibing Hu, Xin Wang, Tingting Hou, and Congli Sun. "Damage Identification of Ancient Timber Structure Based on Autocorrelation Function." Advances in Civil Engineering 2021 (July 5, 2021): 1–12. http://dx.doi.org/10.1155/2021/6683666.

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A damage location method for the autocorrelation peak value change rate based on the vibration response of a random vibration structure is established. To calculate the autocorrelation function of the vibration response of each measurement point, we transformed the maximum values into an autocorrelation peak vector. Under a good condition, the autocorrelation peak vector has a fixed shape; hence, it can be used as a basis for structural damage identification. The two adjacent measurement points with the largest change corresponding to the two nodes of the damage unit and the damage location ar
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15

Chen, Xi, and Ling Yu. "Flexibility-Based Objective Functions for Constrained Optimization Problems on Structural Damage Detection." Advanced Materials Research 186 (January 2011): 383–87. http://dx.doi.org/10.4028/www.scientific.net/amr.186.383.

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Based on concepts of structural modal flexibility and modal assurance criterion (MAC), a new objective function is defined and studied for constrained optimization problems (COP) on structural damage detection (SDD) in this paper. Compared with traditionally objective function, which is defined based on natural frequencies and MAC, effect of objective functions on robustness of SDD calculation is evaluated through numerical simulation of a 2-storey rigid frame. Structural damages are identified by solving the COP on SDD based on an improved particle swarm optimization (IPSO) algorithm. Weak an
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16

Niv, Yaron, and Marko Banic. "Gastric Barrier Function and Toxic Damage." Digestive Diseases 32, no. 3 (2014): 235–42. http://dx.doi.org/10.1159/000357855.

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17

Reed, D. A. "Damage Function Results for Glass Cladding." Journal of Structural Engineering 112, no. 11 (November 1986): 2557–61. http://dx.doi.org/10.1061/(asce)0733-9445(1986)112:11(2557).

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18

Bednarski, Jeffrey J. "DNA damage signals inhibit neutrophil function." Blood 126, no. 26 (December 24, 2015): 2773–74. http://dx.doi.org/10.1182/blood-2015-11-678672.

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19

James, Andrew M., and Michael P. Murphy. "How mitochondrial damage affects cell function." Journal of Biomedical Science 9, no. 6 (September 2002): 475–87. http://dx.doi.org/10.1007/bf02254975.

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20

Hoyer, Patricia B. "Damage to ovarian development and function." Cell and Tissue Research 322, no. 1 (April 23, 2005): 99–106. http://dx.doi.org/10.1007/s00441-005-1083-y.

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21

Gallagher, Mark A., and Philip (Bud) Whiteman. "Probability Distribution Function for Damage Expectancy." Military Operations Research 9, no. 3 (June 1, 2004): 5–15. http://dx.doi.org/10.5711/morj.9.3.5.

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22

Wagenaar, D. J., K. M. de Bruijn, L. M. Bouwer, and H. de Moel. "Uncertainty in flood damage estimates and its potential effect on investment decisions." Natural Hazards and Earth System Sciences 16, no. 1 (January 15, 2016): 1–14. http://dx.doi.org/10.5194/nhess-16-1-2016.

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Abstract. This paper addresses the large differences that are found between damage estimates of different flood damage models. It explains how implicit assumptions in flood damage functions and maximum damages can have large effects on flood damage estimates. This explanation is then used to quantify the uncertainty in the damage estimates with a Monte Carlo analysis. The Monte Carlo analysis uses a damage function library with 272 functions from seven different flood damage models. The paper shows that the resulting uncertainties in estimated damages are in the order of magnitude of a factor
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23

Zhou, Feng, and Guangxu Cheng. "A Coupled Plastic Damage Model for Concrete considering the Effect of Damage on Plastic Flow." Mathematical Problems in Engineering 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/867979.

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A coupled plastic damage model with two damage scalars is proposed to describe the nonlinear features of concrete. The constitutive formulations are developed by assuming that damage can be represented effectively in the material compliance tensor. Damage evolution law and plastic damage coupling are described using the framework of irreversible thermodynamics. The plasticity part is developed without using the effective stress concept. A plastic yield function based on the true stress is adopted with two hardening functions, one for tensile loading history and the other for compressive loadin
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24

Hou, Jilin, Sijie Wang, Qingxia Zhang, and Łukasz Jankowski. "An Improved Objective Function for Modal-Based Damage Identification Using Substructural Virtual Distortion Method." Applied Sciences 9, no. 5 (March 7, 2019): 971. http://dx.doi.org/10.3390/app9050971.

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Damage identification based on modal parameters is an important approach in structural health monitoring (SHM). Generally, traditional objective functions used for damage identification minimize the mismatch between measured modal parameters and the parameters obtained from the finite element (FE) model. However, during the optimization process, the repetitive calculation of structural modes is usually time-consuming and inefficient, especially for large-scale structures. In this paper, an improved objective function is proposed based on certain characteristics of the peaks of the frequency re
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25

Sinden, John D., Helen Hodges, and Jeffrey A. Gray. "Neural transplantation and recovery of cognitive function." Behavioral and Brain Sciences 18, no. 1 (March 1995): 10–35. http://dx.doi.org/10.1017/s0140525x00037249.

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AbstractCognitive deficits were produced in rats by different methods of damaging the brain: chronic ingestion of alcohol, causing widespread damage to diffuse cholinergic and aminergic projection systems; lesions (by local injection of the excitotoxins, ibotenate, quisqualate, and AMPA) of the nuclei of origin of the forebrain cholinergic projection system (FCPS), which innervates the neocortex and hippocampal formation; transient cerebral ischaemia, producing focal damage especially in the CA1 pyramidal cells of the dorsal hippocampus; and lesions (by local injection of the neurotoxin, colch
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Neigh, Gretchen N., Erica R. Glasper, Staci D. Bilbo, Richard J. Traystman, and A. Courtney DeVries. "Cardiac Arrest/Cardiopulmonary Resuscitation Augments Cell-Mediated Immune Function and Transiently Suppresses Humoral Immune Function." Journal of Cerebral Blood Flow & Metabolism 25, no. 11 (May 4, 2005): 1424–32. http://dx.doi.org/10.1038/sj.jcbfm.9600137.

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Immune system activation has implications for cerebrovascular health, but little is known about the function of the immune system after a major cerebrovascular event, such as cardiac arrest and cardiopulmonary resuscitation (CA/CPR). Cardiac arrest and cardiopulmonary resuscitation damages the hippocampus, an important component of the hypothalamic—pituitary—adrenal (HPA) axis, and alterations in HPA axis activity can affect immune function. We tested the hypothesis that CA/CPR (approximately 8mins) would cause HPA axis dysregulation and alter the delayed type hypersensitivity (DTH) response t
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Xu, Qian. "Damage Identification Investigation of Retaining Wall Structures Based on a Virtual Impulse Response Function." Shock and Vibration 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/1346939.

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To eliminate the influence of excitation on the wavelet packet frequency band energy spectrum (ES), ES is acquired via wavelet packet decomposition of a virtual impulse response function. Based on ES, a character frequency band vector spectrum and damage eigenvector spectrum (DES) are created. Additionally, two damage identification indexes, the energy ratio standard deviation and energy ratio variation coefficient, are proposed. Based on the damage index, an updated damage identification method for retaining wall structures is advanced. The damage state of a retaining wall can be diagnosed th
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Pu, Qianhui, Yu Hong, Liangjun Chen, Shili Yang, and Xikun Xu. "Model updating–based damage detection of a concrete beam utilizing experimental damped frequency response functions." Advances in Structural Engineering 22, no. 4 (August 3, 2018): 935–47. http://dx.doi.org/10.1177/1369433218789556.

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This article evaluates the use of experimental frequency response functions for damage detection and quantification of a concrete beam with the help of model updating theory. The approach is formulated as an optimization problem that intends to adjust the analytical frequency response functions from a benchmark finite element model to match with the experimental frequency response functions from the damaged structure. Neither model expansion nor reduction is needed because the individual analytical frequency response function formulation is derived. Unlike the commonly used approaches that ass
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Hou, Yan Fang, and Wei Bing Hu. "Damage Detection of Historic Timber Structure Based on Cross Correlation Function Amplitude Vectors." Advanced Materials Research 368-373 (October 2011): 2442–46. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.2442.

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Cross Correlation Function Amplitude Vector(CorV) is a method of damage detection which is based on random vibration .In this paper, CorV is introduced in the damage detection of historic timber structure according to the characteristics of structure and damage.Meanwhile,the research has been done. CorV of structural damage before and after the change has been expressed that is based on Cross Correlation function amplitude Vector Criterion(CVAC) .Results show that there is a remarkable decrease of CVAC among the CorVs between damaged and intact structures.Damage locations can be determined thr
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Nyarko, Frank Kwabena Afriyie, Gabriel Takyi, Anthony Agyei Agyemang, and Charles Kofi Kafui Sekyere. "Crystalline Silicon (c-Si) Solar Cell Interconnect Damage Prediction Function Based on Effect of Temperature Ramps and Dwells on Creep Damage under Field Thermal Cycling." Crystals 11, no. 6 (June 1, 2021): 633. http://dx.doi.org/10.3390/cryst11060633.

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c-Si solar cell interconnection damages from thermal cycles emanate from cumulative damage contributions from the various load steps in a typical thermal cycle. In general, a typical thermal cycle involves five thermal load steps, namely: 1st cold dwell, ramp-up, hot dwell, ramp-down, and 2nd cold dwell. To predict the contributions of each of these load steps to creep damage in soldered interconnections, each of the respective load steps needs to be profiled to accurately fit a function capable of predicting the damage contributions from a given number of thermal cycles. In this study, a fiel
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Diao, Yansong, Xue Men, Zuofeng Sun, Kongzheng Guo, and Yumei Wang. "Structural Damage Identification Based on the Transmissibility Function and Support Vector Machine." Shock and Vibration 2018 (June 11, 2018): 1–13. http://dx.doi.org/10.1155/2018/4892428.

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A novel damage identification method based on transmissibility function and support vector machine is proposed and outlined in this paper. Basically, the transmissibility function is calculated with the acceleration responses from damaged structure. Then two damage features, namely, wavelet packet energy vector and the low order principal components, are constructed by analyzing the amplitude of the transmissibility function with wavelet packet decomposition and principal component analysis separately. Finally, the classification algorithm and regression algorithm of support vector machine are
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Li, Chaochao, Xiaotao Cheng, Na Li, Zhongmin Liang, Yanyan Wang, and Song Han. "A Three-Parameter S-Shaped Function of Flood Return Period and Damage." Advances in Meteorology 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/6583906.

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With growing flood risk due to increased urbanization, flood damage assessment and flood risk management must be reconsidered. To demonstrate and assess the new features and trends of flood risk in urbanized areas, a novel S-shaped function of return period and damage(R-D)is proposed. The function contains three parameters, which are defined as the maximum flood damageA, critical return periodRc, and integrated loss coefficientk. A basic framework for flood damage assessment was established to evaluate flood damage in the Taihu Basin under various scenarios. The simulation results were used to
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33

Bai, Yi Long, M. F. Xia, F. J. Ke, and J. Bai. "Dynamic Function of Damage and Its Implications." Key Engineering Materials 145-149 (October 1997): 411–20. http://dx.doi.org/10.4028/www.scientific.net/kem.145-149.411.

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Byrne, Christopher, Craig Twist, and Roger Eston. "Neuromuscular Function After Exercise-Induced Muscle Damage." Sports Medicine 34, no. 1 (2004): 49–69. http://dx.doi.org/10.2165/00007256-200434010-00005.

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35

Lemsky, Carolyn M. "Cerebral Reorganization of Function after Brain Damage." Journal of Head Trauma Rehabilitation 16, no. 2 (April 2001): 214–16. http://dx.doi.org/10.1097/00001199-200104000-00010.

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36

Randolph, M. L. "GENETIC DAMAGE AS A FUNCTION OF LET." Annals of the New York Academy of Sciences 114, no. 1 (December 16, 2006): 85–95. http://dx.doi.org/10.1111/j.1749-6632.1964.tb53564.x.

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37

ghasemkheili, Arash sabzi, MohammadReza Davoodi, and mobin mohamadzade rad. "Structural Damage Detection Using Frequency Response Function." International Journal of Engineering and Technology 11, no. 6S (December 31, 2019): 37–59. http://dx.doi.org/10.21817/ijet/2019/v11i6/191106088.

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38

Paradiso, Sergio. "Cerebral Reorganization of Function after Brain Damage." Journal of Nervous and Mental Disease 190, no. 8 (August 2002): 569–70. http://dx.doi.org/10.1097/00005053-200208000-00020.

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39

Finkel⁎, T. "Oxidants, DNA damage and stem cell function." Free Radical Biology and Medicine 53 (September 2012): S15. http://dx.doi.org/10.1016/j.freeradbiomed.2012.08.102.

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40

Choi, Cheonkyu, Kyungtak Kim, Gilho Kim, and Hungsoo Kim. "Development of Damage Function for Flood Damage Assessment on Single Family Housing." Korean Society of Hazard Mitigation 17, no. 6 (December 31, 2017): 421–31. http://dx.doi.org/10.9798/kosham.2017.17.6.421.

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Sun, Lejia, Huanhuan Yin, Meixi Liu, Gang Xu, Xiaoxiang Zhou, Penglei Ge, Huayu Yang, and Yilei Mao. "Impaired albumin function: a novel potential indicator for liver function damage?" Annals of Medicine 51, no. 7-8 (November 17, 2019): 333–44. http://dx.doi.org/10.1080/07853890.2019.1693056.

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42

Ge, Penglei, Huayu Yang, Jingfen Lu, Wenjun Liao, Shunda Du, Yingli Xu, Haifeng Xu, et al. "Albumin Binding Function: The Potential Earliest Indicator for Liver Function Damage." Gastroenterology Research and Practice 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/5120760.

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Background. Currently there is no indicator that can evaluate actual liver lesion for early stages of viral hepatitis, nonalcoholic fatty liver disease (NAFLD), and cirrhosis. Aim of this study was to investigate if albumin binding function could better reflect liver function in these liver diseases.Methods. An observational study was performed on 193 patients with early NAFLD, viral hepatitis, and cirrhosis. Cirrhosis patients were separated according to Child-Pugh score into A, B, and C subgroup. Albumin metal ion binding capacity (Ischemia-modified albumin transformed, IMAT) and fatty acid
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43

Xiao, Feng, Jin Fan, Gang S. Chen, and J. Leroy Hulsey. "Bridge health monitoring and damage identification of truss bridge using strain measurements." Advances in Mechanical Engineering 11, no. 3 (March 2019): 168781401983221. http://dx.doi.org/10.1177/1687814019832216.

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A novel technique to identify bridge damage using genetic algorithms and simulated annealing is proposed in this article. In the proposed method, the cross-sectional area of the damaged member is set as a variable that can be updated. An objective function was investigated to estimate the current condition of the damaged members. This function is the relationship between the measured strain and the analytical strain at the damage location. To obtain better agreement, the parameters were then identified using a genetic algorithm and simulated annealing to minimize the objective function. The pr
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Liu, Wei Feng, Shu Xia Zhang, Wei Liu, and Ling Ling Zhou. "Study of Ecological Environment on Assessment Model of Ecosystem Damage Caused by Oil Spill in Ocean." Advanced Materials Research 908 (March 2014): 392–95. http://dx.doi.org/10.4028/www.scientific.net/amr.908.392.

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An ecosystem damage assessment model is built in the paper based on the features of marine ecosystem service damages caused by oil spill and traits of ecosystem service after restoration. The ecosystem damages caused by oil spill are mainly reflected in the following six services, namely, the fishery resource supply, gas regulation, waste disposal, disaster defense, entertainment and biodiversity conservation as well as the restoration expense of respective damage. The damage degree of oil spill to each service of marine ecosystem differs, and the recovery time and speed of respective service
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Buhari, Rosnawati, and Ac Collop. "Pavement Primary Response Using Influence Function and Peak Influence Function." Applied Mechanics and Materials 256-259 (December 2012): 1871–81. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1871.

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It was identified in previous research that errors in theoretical damage much associated with the influence function calculation. Thus, this paper present the efficient prediction of primary response due to dynamic vehicle loading using influence function and peak influence function approach. In order to provide the realistic loading condition, dynamic road response model with idealised loads representative by mathematical quarter-truck model with two degree of freedom was excited by a random road surface profile which equally spaced points along the simulated road with various different speed
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46

Wang, Meng Hong, and Xiao Nan Cao. "The Researches on Damage Detection Method for Truss Structures." E3S Web of Conferences 38 (2018): 03030. http://dx.doi.org/10.1051/e3sconf/20183803030.

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This paper presents an effective method to detect damage in truss structures. Numerical simulation and experimental analysis were carried out on a damaged truss structure under instantaneous excitation. The ideal excitation point and appropriate hammering method were determined to extract time domain signals under two working conditions. The frequency response function and principal component analysis were used for data processing, and the angle between the frequency response function vectors was selected as a damage index to ascertain the location of a damaged bar in the truss structure. In t
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47

Wang, S. S., E. S. M. Chim, and H. Suemasu. "Mechanics of Fatigue Damage and Degradation in Random Short-Fiber Composites, Part II—Analysis of Anisotropic Property Degradation." Journal of Applied Mechanics 53, no. 2 (June 1, 1986): 347–53. http://dx.doi.org/10.1115/1.3171763.

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Based on the microcrack density and cumulative distribution functions obtained in (Wang et al., 1986), cyclic fatigue degradation and associated damage-induced anisotropy of elastic properties of random short-fiber composites are studied. Constitutive equations of the fatigue-damaged composite are derived on the basis of the well-known self-consistent mechanics scheme in conjunction with a three-dimensional elliptic crack theory and the probabilistic functions of microcrack density and cumulative distribution. The anisotropic stiffness degradation is determined as a function of microcrack evol
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48

Hu, Zhixiang, and Peiguan Zhang. "Damage Identification of Structures Based on Smooth Orthogonal Decomposition and Improved Beetle Antennae Search Algorithm." Advances in Civil Engineering 2021 (February 27, 2021): 1–14. http://dx.doi.org/10.1155/2021/8857356.

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Abstract:
A novel damage identification method that utilizes the smooth orthogonal decomposition (SOD) combined with the improved beetle antennae search algorithm (BAS) presented by previous scholars is proposed. Firstly, the damage index which can track the curvature changing of mode shape identified by the SOD method is generated by an adaptive polynomial fit method. The locations of structure damages are determined according to the damage index. Thus, the number of possible damaged elements needed to be taken into account can be reduced when calculating the degree of damage. Then, the reduction in th
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49

Surendran, C. S., and G. Sasikala. "Representation of Damage with Fracture-Strain." Applied Mechanics and Materials 592-594 (July 2014): 1205–9. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.1205.

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Under the influence of stresses and strains damage is progressively accumulated in the material leading to full damage viz. fracture corresponding to a critical damage parameter. The damage parameter varies in between zero and unity inclusive of both the values corresponding to non damaged and fully damaged condition. Also damage is a tensorial quantity with physical meaning. In order to represent this physical quantity, a damage-D plane is suggested. This is like a co-ordinate system to easy representation of damage as a function of fracture strain. The damage-D plane can be merged with engin
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50

Arya, Kriti, and Somnath Sarangi. "Effect of damage on the free radial oscillations of an incompressible isotropic tube." Mathematics and Mechanics of Solids 23, no. 8 (June 20, 2017): 1177–205. http://dx.doi.org/10.1177/1081286517712076.

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The effect of damage on the finite-amplitude, free radial oscillations of an arbitrary incompressible, isotropic, homogeneous cylindrical tube is investigated. Pressure is applied to the inner and outer surfaces of the damaged cylinder and constrained from both ends. A purely radial motion is observed when the pressure is removed. The corresponding equation of motion is obtained, incorporating the effect of damage. A simple exponential front factor damage function is introduced in the tube problem. The damage function is a function of the first invariant of the left Cauchy–Green deformation te
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