期刊,International journal of structural integrity 2025年16卷3期_国家学术搜索

Guest editorial: Innovative methods for structural integrity and reliability assessment and material characterisation under environmental effects

Dordevic, BranislavSedmak, Simon

523-524页

原文链接:

NETL
NSTL
Emerald Group Publishing

Guest editorial: Innovative methods for structural integrity and reliability assessment and material characterisation under environmental effects

Dordevic, BranislavSedmak, Simon

523-524页

原文链接:

NETL
NSTL
Emerald Group Publishing

Tensile, flexural and free vibration characteristics of sustainable recycled polypropylene filled with spherical SiC through experimental and RVE analysis

Sahu, Santosh KumarSreekanth, P. S. RamaDeepthi, Y. P.Ma, Quanjin...

525-542页

查看更多>>摘要：PurposeThis study aims to investigate the mechanical properties of sustainable recycled polypropylene (rPP) composite materials integrated with spherical silicon carbide (SiC) particles.Design/methodology/approachA representative volume element (RVE) analysis is employed to predict the Young's modulus of rPP filled with spherical-shaped SiC at varying volume percentages (i.e. 10, 20 and 30%).FindingsThe investigation reveals that the highest values of Young's modulus, tensile strength, flexural strength and mode 1 frequency are observed for the 30% rPP/SiC samples, exhibiting increases of 115, 116, 62 and 15%, respectively, compared to pure rPP. Fractography analysis confirms the ductile nature of pure rPP and the brittle behavior of the 30% rPP/SiC composite. Moreover, the RVE method predicts Young's modulus more accurate than micromechanical models, aligning closely with experimental results. Additionally, results from ANSYS simulation tests show tensile strength, flexural strength and frequency within a 10% error range when compared to experimental data.Originality/valueThis study contributes to the field by demonstrating the mechanical enhancements achievable through the incorporation of sustainable materials like rPP/SiC, thereby promoting environmentally friendly engineering solutions.

原文链接:

NETL
NSTL
Emerald Group Publishing

Tensile, flexural and free vibration characteristics of sustainable recycled polypropylene filled with spherical SiC through experimental and RVE analysis

Sahu, Santosh KumarSreekanth, P. S. RamaDeepthi, Y. P.Ma, Quanjin...

525-542页

查看更多>>摘要：PurposeThis study aims to investigate the mechanical properties of sustainable recycled polypropylene (rPP) composite materials integrated with spherical silicon carbide (SiC) particles.Design/methodology/approachA representative volume element (RVE) analysis is employed to predict the Young's modulus of rPP filled with spherical-shaped SiC at varying volume percentages (i.e. 10, 20 and 30%).FindingsThe investigation reveals that the highest values of Young's modulus, tensile strength, flexural strength and mode 1 frequency are observed for the 30% rPP/SiC samples, exhibiting increases of 115, 116, 62 and 15%, respectively, compared to pure rPP. Fractography analysis confirms the ductile nature of pure rPP and the brittle behavior of the 30% rPP/SiC composite. Moreover, the RVE method predicts Young's modulus more accurate than micromechanical models, aligning closely with experimental results. Additionally, results from ANSYS simulation tests show tensile strength, flexural strength and frequency within a 10% error range when compared to experimental data.Originality/valueThis study contributes to the field by demonstrating the mechanical enhancements achievable through the incorporation of sustainable materials like rPP/SiC, thereby promoting environmentally friendly engineering solutions.

原文链接:

NETL
NSTL
Emerald Group Publishing

Research of criteria for analyzing the load-bearing capacity of buildings in areas of technogenic impact caused by mining operations

Gusev, GeorgiyTsvetkov, RomanShardakov, Igor

543-552页

查看更多>>摘要：Purpose This study aims to ensure safe operation of buildings in the mining area.Design/methodology/approachThe strain energy value was taken as one of the parameters characterizing the deformation process at critical stages in these problems and providing a link between them. Based on the data obtained for the structural element of loading diagrams and assessment of the stress-strain state of the structure as a whole, the maximum permissible horizontal deformations of the soil around the foundation are determined, at which the building elements reach the stress-strain state preceding the loss of bearing capacity. For this purpose, a parameter is used that characterizes the deformation process at the stages of critical deformation in these problems and provides a link between them. This parameter is the value of strain energy.FindingsBased on the obtained force behavior diagrams of structural elements and assessment of the stress-strain state of the structure as a whole, the maximum permissible horizontal ground deformations in the vicinity of the foundation are determined, at which the building elements reach the stress-strain state preceding the loss of bearing capacity.Originality/valueThe research provides new data in the form of regularities of deformation behavior of building structures in the zones of mine workings. These data formed the basis for the normative documentation being developed. The research results were used for the development of internal instructions of a large mining enterprise.

原文链接:

NETL
NSTL
Emerald Group Publishing

Research of criteria for analyzing the load-bearing capacity of buildings in areas of technogenic impact caused by mining operations

Gusev, GeorgiyTsvetkov, RomanShardakov, Igor

543-552页

查看更多>>摘要：Purpose This study aims to ensure safe operation of buildings in the mining area.Design/methodology/approachThe strain energy value was taken as one of the parameters characterizing the deformation process at critical stages in these problems and providing a link between them. Based on the data obtained for the structural element of loading diagrams and assessment of the stress-strain state of the structure as a whole, the maximum permissible horizontal deformations of the soil around the foundation are determined, at which the building elements reach the stress-strain state preceding the loss of bearing capacity. For this purpose, a parameter is used that characterizes the deformation process at the stages of critical deformation in these problems and provides a link between them. This parameter is the value of strain energy.FindingsBased on the obtained force behavior diagrams of structural elements and assessment of the stress-strain state of the structure as a whole, the maximum permissible horizontal ground deformations in the vicinity of the foundation are determined, at which the building elements reach the stress-strain state preceding the loss of bearing capacity.Originality/valueThe research provides new data in the form of regularities of deformation behavior of building structures in the zones of mine workings. These data formed the basis for the normative documentation being developed. The research results were used for the development of internal instructions of a large mining enterprise.

原文链接:

NETL
NSTL
Emerald Group Publishing

Sustainability and environmental life cycle analysis of welding processes

Doncheva, ElisavetaAvramov, NikolaKrstevska, AleksandraPetreski, Martin...

553-569页

查看更多>>摘要：PurposeWelding is a widely used manufacturing process in many industries. The process consumes a lot of energy and resources, pollutes the environment, and emits gases and fumes into the atmosphere that are dangerous to human health. There are various welding processes, and the suitable welding process is usually chosen based on cost, material, and conditions. Subjectivity is the most significant impediment to selecting an optimal process. As a result, it is critical to develop the appropriate set of criteria, use the best tool and methodology, and collect sufficient data. This study examines the sustainability of welding processes and their environmental impact.Design/methodology/approachThe welding process's sustainability was examined and discussed in general, considering the technological specifics of each welding process, physical performance, and environmental, economic, and social effects. The study investigates the environmental impact of MMAW, GMAW, and GTAW/GMAW processes through experimental work and LCA methodology.FindingsMMAW is the most environmentally harmful technology, whereas GMAW has the least impact. The GTAW/GMAW process outperformed the other processes in terms of yield stress, but the analyses revealed that it had a greater environmental impact than GMAW.Originality/valueThe study provides an environmental impact summary and demonstrates the effects of welding parameters and processes. This gives users an understanding of choosing the best welding technique or making the process more environmentally friendly. These recommendations help policymakers identify hot spots and implement the right plans to achieve more sustainable manufacturing.

原文链接:

NETL
NSTL
Emerald Group Publishing

Sustainability and environmental life cycle analysis of welding processes

Doncheva, ElisavetaAvramov, NikolaKrstevska, AleksandraPetreski, Martin...

553-569页

查看更多>>摘要：PurposeWelding is a widely used manufacturing process in many industries. The process consumes a lot of energy and resources, pollutes the environment, and emits gases and fumes into the atmosphere that are dangerous to human health. There are various welding processes, and the suitable welding process is usually chosen based on cost, material, and conditions. Subjectivity is the most significant impediment to selecting an optimal process. As a result, it is critical to develop the appropriate set of criteria, use the best tool and methodology, and collect sufficient data. This study examines the sustainability of welding processes and their environmental impact.Design/methodology/approachThe welding process's sustainability was examined and discussed in general, considering the technological specifics of each welding process, physical performance, and environmental, economic, and social effects. The study investigates the environmental impact of MMAW, GMAW, and GTAW/GMAW processes through experimental work and LCA methodology.FindingsMMAW is the most environmentally harmful technology, whereas GMAW has the least impact. The GTAW/GMAW process outperformed the other processes in terms of yield stress, but the analyses revealed that it had a greater environmental impact than GMAW.Originality/valueThe study provides an environmental impact summary and demonstrates the effects of welding parameters and processes. This gives users an understanding of choosing the best welding technique or making the process more environmentally friendly. These recommendations help policymakers identify hot spots and implement the right plans to achieve more sustainable manufacturing.

原文链接:

NETL
NSTL
Emerald Group Publishing

Determination of the influence of FDM printing parameters on tensile strength and fracture occurrence of additively manufactured ABS material

Delic, MarkoMandic, VesnaAleksandrovic, SrbislavArsic, Dusan...

570-590页

查看更多>>摘要：PurposeThe impact of the application of hollow structures through variations of infill patterns and their density on the tensile properties was considered. The mechanical properties of the parts have a significant influence on the behavior and reliability of the parts in exploitation.Design/methodology/approachIn this paper, the mechanical properties of the additively manufactured ABS material were investigated depending on the FDM printing parameters, which relate both to process parameters such as printing velocity and layer thickness, but also to coupled influence with the change of specimen orientation, that is raster angle. A standard tensile test was applied so that the specimens were prepared according to the ASTM D638 standard.FindingsThe results of the conducted experimental research enable the identification of the optimal choice of printing parameters for additively produced ABS materials with the highest values of strain at break and tensile strength. The significance of the obtained results is reflected in the recommendations for the selection of appropriate combination of process parameters for additive manufacturing of ABS parts using FDM technology.Originality/valueThis paper evaluates influence of FDM printing parameters on the tensile strength of parts and therefore on the reliability of the parts.

原文链接:

NETL
NSTL
Emerald Group Publishing

Determination of the influence of FDM printing parameters on tensile strength and fracture occurrence of additively manufactured ABS material

Delic, MarkoMandic, VesnaAleksandrovic, SrbislavArsic, Dusan...

570-590页

查看更多>>摘要：PurposeThe impact of the application of hollow structures through variations of infill patterns and their density on the tensile properties was considered. The mechanical properties of the parts have a significant influence on the behavior and reliability of the parts in exploitation.Design/methodology/approachIn this paper, the mechanical properties of the additively manufactured ABS material were investigated depending on the FDM printing parameters, which relate both to process parameters such as printing velocity and layer thickness, but also to coupled influence with the change of specimen orientation, that is raster angle. A standard tensile test was applied so that the specimens were prepared according to the ASTM D638 standard.FindingsThe results of the conducted experimental research enable the identification of the optimal choice of printing parameters for additively produced ABS materials with the highest values of strain at break and tensile strength. The significance of the obtained results is reflected in the recommendations for the selection of appropriate combination of process parameters for additive manufacturing of ABS parts using FDM technology.Originality/valueThis paper evaluates influence of FDM printing parameters on the tensile strength of parts and therefore on the reliability of the parts.

原文链接:

NETL
NSTL
Emerald Group Publishing