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Energy Absorption and Strength Evaluation for Compressed Glass Fibre Reinforced Polyester (GRP) for Automobile Components Design in Crash Prevention Scheme

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Journal of Minerals and Materials Characterization and Engineering 2012年第1期11卷 85-105页

作者： Chukwutoo Christopher Ihueze Alfred nwabunwanne. Enetanya Department of Industrial /Production Engineering Nnamdi Azikiwe University Awka Department of Mechanical Engineering Nnamdi Azikiwe University Awka

This paper utilized the compressive tests results to establish some critical mechanical properties and crashworthiness parameters that may be required to design GRP composites of polyester matrix in automobile structures. Third order polynomial function was used with numerical methods to establish the elastic properties whish could not be established due to sensitivity of the Monsanto tensometer used to obtain the compression results. This study showed that the finite difference method captured the general trend of experimental solution giving optimum value of compressive stress as 23.78MPa at strain of 0.018 and elastic limit of 12.01MPa at 0.01 strain through finite difference analysis while the solution with third order polynomial interpolation gave optimum compressive stress as 36.57MPa at 0.018 strain and elastic limit of 12.143MPa. Also established with compression data is the compressive or buckling moduli of 1.2GPa. Gauss-Legendre two point rule was used to evaluate the area under the stress-strain curve which measured the amount of energy absorbed per unit volume of sample from where the energy absorbed at ultimate strength of 0.025J/M3- 0.22 J/M3 , energy at fracture of 0.62 J/M3- 1.62 J/M3 and the absorbed specific work 0.001J/Kg are established.

关键词： viscoelastic behavior crash parameters energy absorption and crash work absorbed specific work.

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Experience of, and Perception on Gender Based Violence (GBV) by Pregnant Women in South Eastern Nigeria

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Advances in Reproductive Sciences 2019年第4期7卷 113-124页

作者： Joseph Ifeanyi Brian-D. Adinma victo. nwabunwanne o.uaka Joseph odiri Ugbaja osita Samuel Umeononihu Nneoma Dolores Adinma-obiajulu odira Linda okeke Department of obstetrics and Gynaecology Nnamdi Azikiwe University and Teaching Hospital Nnewi Nigeria Department of Nursing Sciences Nnamdi Azikiwe University and Teaching Hospital Nnewi Nigeria

Background: Gender-based violence (GBV) is a common women’s sexual and reproductive right violation. Pregnancy could be associated with an increased risk of GBV. objective: To determine the experience of, and perception on GBV by pregnant Nigerian women. Methodology: A questionnaire-based cross-sectional study involving 250 pregnant women from six selected health facilities in Anambra, Southeastern Nigeria was conducted to elicit their experience of, and perceptions on gender based violence. Data analysis employed statistical package for social sciences (SPSS) version 22.0. Statistical comparison of variables employed Chi-square test, with significance levels comprising of p Results: only 80 (32.0%) of the respondents were aware of GBV while 17 (6.8%) and 20 (8.0%) had experienced it in the index and previous pregnancies respectively. Physical violence was the most commonly experienced 18 (58.1%), while marital quarrel and drunkenness were the most commonly perceived causes, 21 (26.3%) apiece. Up to 33.7% of the respondents would report GBV to the law enforcement agencies;22.5% would seek medical attention and only 2.5% would do nothing. The most common source of information on GBV was public lecture (32.5%) followed by media (26.3%). As high as 49 (61.3%) of the respondents that are aware of GBV (N = 80), thought that GBV could be prevented while up to 53 (66.3%) were aware of the strategies for its prevention. Conclusion: Awareness of GBV in this study is low (32.0%) while experience is even lower at 6.8%, and 8.0% for the index and previous pregnancies respectively. Information on prevention strategies for GBV is also low. The need to develop comprehensive reproductive health (RH) policy that incorporates GBV and its management, to be taught in educational institutions is highlighted. The importance of public health lectures and the employment of various media platforms as reproductive right enlightenment modalities, towards creating awareness on the prevention a

关键词： Experience Perception Gender Based Violence Pregnant Women Southeastern Nigeria

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