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  • SAGE Publications  (4)
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  • SAGE Publications  (4)
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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2023
    In:  Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science Vol. 237, No. 10 ( 2023-05), p. 2346-2359
    In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, SAGE Publications, Vol. 237, No. 10 ( 2023-05), p. 2346-2359
    Abstract: Shot peening is widely used in automobile, aviation, and other industries because it can change the fatigue strength of metal structures by introducing residual compressive stress field on the surface and significantly improve the fatigue life of mechanical structures. In order to improve the surface properties of parts after shot peening, an analysis method for rapidly predicting residual stress of parts surface during shot peening is proposed. During the analysis, an elastoplastic impact model of shot was established, and stress–strain laws in three processes of elastic loading, plastic deformation and stress release were studied. The residual stress under different shot peening parameters was predicted by considering the plastic strengthening effect of TC4 (Ti-6Al-4V). A TC4 shot peening test was performed and residual stress was measured, and the results are consistent with the model predictions, which verified correctness of the model.
    Type of Medium: Online Resource
    ISSN: 0954-4062 , 2041-2983
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2024890-8
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  European Journal of Inflammation Vol. 20 ( 2022-01), p. 1721727X2210898-
    In: European Journal of Inflammation, SAGE Publications, Vol. 20 ( 2022-01), p. 1721727X2210898-
    Abstract: Fine particulate matter (PM 2.5 ) has become a major concern for global environmental health, as it can lead to inflammatory diseases, such as allergic rhinitis (AR) and cause a high burden of disease. The aim of this study is to carry out a systematic review and meta-analysis based on available research to present the link between ambient PM 2.5 and the risk of AR in global populations. Methods: We systematically searched six databases from their inception to 30 November 2020. An expanded literature search was carried out using the references of the included studies. Data extraction was performed using Excel 2016 software, and meta-analysis and heterogeneity analysis were performed using Review Manager 5.3 software. Results: A total of 14 out of 1361 studies were included in the meta-analysis. The quality assessment showed these studies to be of high quality. Seven out of 14 studies reported a relationship between ambient PM 2.5 and AR through Odds ratios (OR, OR overall = 1.14, 95% CI [1.00, 1.29]), but with a non-significant statistical overall test result (the test result for overall effect was Z = 1.98, p =.05). For subgroups by ages and regions, OR Children = 1.08 (95% CI [1.04, 1.13]), and OR Other ages = 1.50 (95% CI [1.24, 1.81]. The differences between age-related subgroups were significant (p 〈 .01). Meanwhile, the relationship between PM 2.5 and the risk of AR in Asia was significant (OR Asia = 1.20, 95% CI [1.01, 1.44], p =.001); whereas the association studies from outside of Asia have reported the relationship as non-significant (OR Out-Asia = 1.04, 95% CI [0.82, 1.31], p =.76). Conclusion: There are reports that recognize that the exposure to PM 2.5 may contribute to the development of AR. An international framework with a whole-of-society approach, including air quality control efforts and well-being health promotion among AR patients and at-risk populations, should be implemented.
    Type of Medium: Online Resource
    ISSN: 1721-727X , 2058-7392
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2584683-8
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2022
    In:  Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering Vol. 236, No. 14 ( 2022-12), p. 3179-3191
    In: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, SAGE Publications, Vol. 236, No. 14 ( 2022-12), p. 3179-3191
    Abstract: Conical friction surface is a novel configuration for friction plate in transmission. Numerical FEA models for transient heat transfer and distribution of conically grooved friction plate have been established to investigate the thermal behavior of the conical surface with different configurations. The finite element method is used to obtain the numerical solution, the temperature test data of conical surface are obtained by the friction test rig. In order to study and compare the temperature behavior of conically grooved friction plate, several three-dimensional transient temperature models are established. The heat generated on the friction interface during the continuous sliding process is calculated. Two different pressure conditions were defined to evaluate the influence of different load conditions on temperature rise and the effects of conical configuration parameters on surface temperature distribution are investigated. The results show that the radial temperature gradient on conical friction surface is obvious. The uniform pressure condition could be used when evaluating the temperature rise of conically grooved friction plate. The increase of the cone height could improve the radial temperature gradient of the conically grooved friction plate.
    Type of Medium: Online Resource
    ISSN: 0954-4070 , 2041-2991
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2032754-7
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  • 4
    In: Energy Exploration & Exploitation, SAGE Publications, Vol. 28, No. 4 ( 2010-10), p. 223-237
    Abstract: The genetic type and hydrocarbon accumulation conditions of glutenite in Shengtuo Area have been studied based on cores, well-logs, and formation test data. During deposition of the fourth member of Eogene Shahejie Formation ( Es4), Shengtuo Area was predominated by nearshore subaqueous fan and sublacustrine fan, controlled by the Chennan Fault and the Tuo-Sheng-Yong Fault. Nearshore subaqueous fan and sublacustrine fan were respectively developed on the downthrown of the Chennan Fault and the Tuo-Sheng-Yong Fault. Both of nearshore subaqueous fan and sublacustrine fan can be subdivided into three subfacies, including inner fan, middle fan and outer fan, from proximal to distal provenance. The braided channel within the middle fan, characterized by conglomeratic sandstones and sandstones with high secondary porosity and overpressured microfissures resulted from the effect of organic acid and reservoir overpressure, is the best reservoir among these three subfacies. Inner fan subfacies, consisted of thick-bedded, poorly-sorted and matrix-supported conglomerates, has low primary and secondary porosity, is the best sealing among this depositional system. Outer fan sediments, comprised of thick dark mudstones interbedded with thin sandstones in which overpressured microfissures developed very well, accounts for the migration pathway for oil and gas to enter braided channel reservoir from source rocks. In addition, the glutenite fans were developed near the Lijin Sag and the Minfeng Sag, which deposited two sets of high quality source rocks ( Es4s (upper section of Es4) and Es4x (lower section of Es4) source rock). With regional cap rock and appropriate preservation conditions, the different subfacies in glutentite fans worked together and formed a “self-generation and self-storage” lithostratigraphic trap characterized by “migrating through outer fan, accumulating in middle fan and sealing by inner fan”.
    Type of Medium: Online Resource
    ISSN: 0144-5987 , 2048-4054
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2010
    detail.hit.zdb_id: 2026571-2
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