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Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete 混凝土受压区损伤的缺陷钢筋混凝土梁的研究
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.27
Z. Blikharskyy, M. Lobodanov, P. Vegera
Abstract In the building industry, it is a frequent cause of damage to elements at different stages: during transportation, operation, installation, etc. Since replacing an element is not always possible due to various circumstances, it entails significant financial losses, logistics, and others. For this reason, the expediency of studying the effect of damage on the bearing capacity of reinforced concrete elements is growing. This effect is dependent on its type and has significant variability. In the case of the combination of the defect and damage in reinforced concrete elements, the complexity of the research of this element increases significantly. In this article is discussed: a review of damaged reinforced concrete elements; researching the influence of the damage and additional factors on the element; developed testing methodology for bending reinforced concrete elements with damage to concrete in a compressed zone with insufficient reinforcement, when performing damage to the action of the load and during the action of the load, is presented; the influence on the deformability and bearing capacity of the variability of damage on the sample with insufficient reinforcement is reflected, taking into account the factor of change in the load at which the damage is performed; a comparison is made of the dependence of the change in the actual height of the compressed zone on the change in the load on the elements; implementation of conclusions on the result of the study.
摘要在建筑行业中,在运输、操作、安装等不同阶段,它是构件损坏的常见原因。由于由于各种情况,更换构件并不总是可能的,因此会带来重大的财务损失、物流损失和其他损失。因此,研究损伤对钢筋混凝土构件承载力影响的方便性越来越大。这种影响取决于其类型,并且具有显著的可变性。在钢筋混凝土构件的缺陷和损伤相结合的情况下,该构件研究的复杂性显著增加。本文讨论了:钢筋混凝土构件的损伤综述;研究损伤和附加因素对单元的影响;提出了在钢筋不足的压缩区内,在荷载作用下和荷载作用期间对混凝土造成损伤的钢筋混凝土构件进行弯曲的测试方法;考虑到进行损伤时载荷的变化因素,反映了钢筋不足的样品损伤可变性对变形能力和承载力的影响;对压缩区域的实际高度的变化与元件上的负载的变化的相关性进行比较;研究结论的落实情况。
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引用次数: 2
Experimental studies of the possibility of laser processing as a cleaner method of achieving a surface with good adhesion 激光加工作为一种清洁方法获得具有良好附着力的表面的可能性的实验研究
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.28
B. Ciecińska
Abstract In manufacturing processes many technological operations are designed, in which the adhesive properties of the treated surface are very important. These are processes related to application of any coating on the surface, such as gluing, painting, varnishing and others. Durability of coatings depends on proper preparation of the surface to which they are going to be applied. Conventional methods, such as grinding, sandblasting with subsequent washing and degreasing, as well as galvanic treatment applied to e.g. aluminium alloys - require the use of not only specific equipment but also chemical substances. They often lead to a significant burden on the environment due to their harmful properties. In an experimental study, attention was drawn to the significant environmental aspects of such a technological process and work was carried out to demonstrate whether it is possible to eliminate toxic and hazardous substances and to create good adhesion conditions by laser processing. To this purpose, samples were made out of two representative materials: X6Cr17 steel and AW-2024 aluminium alloy, abrasive surface treatment or in a galvanic bath and then washed, degreased and dried. Laser surface treatment without the use of additional chemicals was proposed as an environmentally cleaner technology. Surface roughness and adhesion of the test polymer coating were measured for comparative evaluation of the applied treatment methods. Obtained results were discussed in terms of the possibility of eliminating harmful influences and implementing laser treatment as a cleaner technology in the production of components requiring coating.
摘要在制造过程中,设计了许多工艺操作,其中处理表面的粘合性能非常重要。这些都是与表面任何涂层的应用有关的过程,如胶合、涂漆、上光等。涂层的耐久性取决于涂层表面的正确处理。传统方法,如研磨、喷砂以及随后的清洗和脱脂,以及对铝合金进行电镀处理,不仅需要使用特定的设备,还需要使用化学物质。由于其有害特性,它们往往会给环境带来重大负担。在一项实验研究中,人们注意到了这种技术过程的重要环境方面,并进行了工作,以证明是否有可能通过激光加工消除有毒有害物质并创造良好的粘合条件。为此,样品由两种具有代表性的材料制成:X6Cr17钢和AW-2024铝合金,经过研磨表面处理或在电镀浴中进行处理,然后清洗、脱脂和干燥。激光表面处理不使用额外的化学物质被提议作为一种环境清洁技术。测量测试聚合物涂层的表面粗糙度和附着力,以对所应用的处理方法进行比较评估。讨论了在生产需要涂层的部件时消除有害影响和将激光处理作为一种清洁技术的可能性。
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引用次数: 0
Influence of Shot Peening on the Wear Behaviour of Medium Carbon Steel 喷丸处理对中碳钢磨损性能的影响
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.29
M. Vicen, O. Bokůvka, L. Trško, M. Drbúl, R. Nikolić, F. Nový
Abstract Influence of shot peening on the wear behaviour of medium carbon, C55 steel was experimentally verified. Experimental work included determination of the chemical composition, heat treatment, microstructure evaluation, mechanical properties measurement, shot peening treatment, the magnitude of the compressive residual stresses was evaluated, roughness profiles measurement and finally the friction tests. The results evidence the significant role played by the applied shot peening on wear behaviour of medium carbon steel. An important effect of surface roughness has been demonstrated. The coefficient of friction after shot peening compared to ground surface increased, 1.44 – 1.85 times.
试验验证了喷丸处理对中碳C55钢磨损性能的影响。实验工作包括化学成分的测定、热处理、微观结构评估、机械性能测量、喷丸处理、压缩残余应力的大小评估、粗糙度轮廓测量,最后进行摩擦试验。结果表明,喷丸处理对中碳钢的磨损性能起着重要作用。表面粗糙度的一个重要影响已经被证明。喷丸处理后的摩擦系数比研磨表面增加了1.44–1.85倍。
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引用次数: 2
Analysis of the maturity of process monitoring in manufacturing companies 制造企业过程监控成熟度分析
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.30
K. Czerwińska, A. Pacana
Abstract The economic progress of recent years has contributed to the fact that both the quality of products and services offered and ISO standardization have become priority criterion that determines the success of manufacturing enterprises. Therefore, the monitoring and supervision of processes carried out in manufacturing companies is a key issue. These aspects support the achievement of key economic and quality objectives. The paper presents the results of a study on manufacturing enterprises in the context of process monitoring maturity. The research objective of the study was to determine the level of maturity in the use of process monitoring techniques and methods in manufacturing enterprises. The subject of the research were the techniques and methods used by the surveyed enterprises in such areas as: production management, machinery park management, warehouse management, transport management, inventory and supply management and IT tools. In order to determine the level of maturity, the author’s model was used, according to which the level of maturity of a manufacturing enterprise in the area of process monitoring depends on the instrumentation that is used in it.
摘要近年来的经济进步促使产品和服务的质量以及ISO标准化成为决定制造企业成功的首要标准。因此,对制造企业进行过程监控是一个关键问题。这些方面支持实现关键的经济和质量目标。本文介绍了在过程监控成熟度的背景下对制造企业的研究结果。本研究的研究目的是确定制造企业使用过程监控技术和方法的成熟程度。研究的主题是被调查企业在生产管理、机械园区管理、仓库管理、运输管理、库存和供应管理以及IT工具等领域使用的技术和方法。为了确定成熟度水平,使用了作者的模型,根据该模型,制造企业在过程监控领域的成熟度水平取决于其中使用的仪器。
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引用次数: 2
The use of combined quality management instruments to analyze the causes of non-conformities in the castings of the cover of the rail vehicle bearing housing 运用综合质量管理仪器对轨道车辆轴承座盖件铸件不合格原因进行了分析
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.36
K. Czerwińska, A. Piwowarczyk
Abstract The most critical activities influencing the success of each company are continuous improvement of the quality of manufactured products and monitoring of the production process. Skillful use of available technologies and quality management tools allows for eliminating casting non-conformities and preventing their repetition in the future. The research aimed to analyze the types of defects occurring in castings, the location of their most frequent occurrence areas, and to identify the causes of defects in castings of bearing housings used in rail vehicles. The benefits of a combination of quality management tools for diagnosing material discontinuities in the analyzed castings are presented in this article.
影响每个公司成功的最关键的活动是对制成品质量的持续改进和对生产过程的监控。熟练地使用现有技术和质量管理工具,可以消除铸造不符合项,并防止它们在将来重复。本研究旨在分析铸件中发生缺陷的类型、最常发生缺陷的区域位置,并确定轨道车辆轴承壳体铸件缺陷的原因。本文介绍了在分析铸件中诊断材料不连续性的质量管理工具组合的好处。
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引用次数: 1
How car producers are driving toward sustainable supplier development 汽车生产商如何推动可持续供应商发展
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.33
P. Hąbek, Juan J. Lavios, Edward Krupah
Abstract Sustainable supplier development helps to improve mutually the supplier’s as well as the buying company sustainability performance. The producer could choose guidance, compliance or capacity building activities to develop its supplier or implement them all. This paper aims to present how the car producers practice sustainable supplier development taking into account different types of approaches and implementation tools. The authors applied content analysis to investigate approaches of six car producers from EU member states. The data was collected from the sustainability reports and complemented with the available information of the supplier sustainability requirements and the code of conduct of each car producer. The findings revealed that analysed car producers use similar approaches to develop their suppliers in the context of sustainability. All of them use mix of activities from all identified categories and collaborate within industry initiatives devoted to spread sustainability in supply chain.
摘要供应商的可持续发展有助于供应商和采购公司的可持续发展绩效的相互提高。生产商可以选择指导、合规或能力建设活动来发展其供应商或实施所有这些活动。本文旨在介绍汽车生产商如何在考虑不同类型的方法和实施工具的情况下实施可持续供应商发展。作者应用内容分析法对来自欧盟成员国的六家汽车生产商的方法进行了调查。这些数据是从可持续性报告中收集的,并辅以供应商可持续性要求和每个汽车生产商行为准则的可用信息。调查结果显示,经过分析的汽车生产商在可持续发展的背景下使用类似的方法来发展其供应商。他们都使用所有确定类别的活动组合,并在致力于在供应链中传播可持续性的行业举措中进行合作。
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引用次数: 1
Sustainable consumption among children and adolescents 儿童和青少年的可持续消费
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.32
Leszek Kaźmierczak-Piwko, P. Kułyk, Adrianna Dybikowska, Piotr Dubicki, Zbigniew Binek
Abstract Young consumers (children and adolescents) play an increasingly important role in the functioning of the modern consumer market. Accordingly, it is becoming more important to promote sustainable, ecological consumption patterns among this group. The authors of the article analysed the results of a survey conducted on a group of 1326 children aged 9 to 15. The purpose was to diagnose the awareness and functioning patterns of consumption among the studied group of young consumers from the Polish market and to formulate a set of recommendations for the process of their ecological, economic and social education aimed at building sustainable consumption patterns. During the research process, an attempt was made to diagnose the ability to identify eleven selected, popular, pro-ecological graphic symbols placed on consumer products, aimed at assessing the skills of young consumers to identify products with better environmental parameters. The collected empirical data was analysed with the R-project program using the following methods: descriptive statistics, nonparametric Kruskal-Wallis test and Pearson Chi-square test of independence. As a result of the use of the comparative analysis method, the results of research in individual age groups of young consumers were compared and interpreted. After the research, the authors concluded that the education system lacks actions to consolidate the acquired knowledge in the field of ecolabeling, which results in large disproportions in the recognition of eco-labels both in individual age groups and in relation to selected symbols. It is disturbing that only 12.2% of the interviewed learners indicated the eco-label as a decisive factor in purchasing a food product. The authors of the article believe that among the group of young consumers, actions should be taken to raise awareness of sustainable consumption, and this requires consistent and differentiated steps at all levels of their education.
摘要年轻消费者(儿童和青少年)在现代消费市场的运作中发挥着越来越重要的作用。因此,在这一群体中推广可持续的生态消费模式变得越来越重要。这篇文章的作者分析了一项针对1326名9至15岁儿童的调查结果。目的是诊断所研究的波兰市场年轻消费者群体的消费意识和功能模式,并为他们的生态、经济和社会教育过程制定一套建议,以建立可持续的消费模式。在研究过程中,试图诊断识别消费品上11个选定的、流行的、有利于生态的图形符号的能力,旨在评估年轻消费者识别具有更好环境参数的产品的技能。使用R项目程序,使用以下方法对收集的经验数据进行分析:描述性统计、非参数Kruskal-Wallis检验和皮尔逊独立性卡方检验。由于采用了比较分析方法,对年轻消费者个体年龄组的研究结果进行了比较和解读。研究结束后,作者得出结论,教育系统缺乏巩固在生态标签领域获得的知识的行动,这导致在各个年龄组和与所选符号相关的生态标签的识别率大幅失衡。令人不安的是,只有12.2%的受访学习者表示生态标签是购买食品的决定性因素。文章作者认为,在年轻消费者群体中,应该采取行动提高对可持续消费的认识,这需要在他们的各级教育中采取一致和有区别的步骤。
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引用次数: 0
Improvement and evaluation of the financial (accounting) services quality in the era of SARS-COV-2 严重急性呼吸系统综合征冠状病毒2型时代财务(会计)服务质量的改进和评估
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-08-05 DOI: 10.30657/pea.2022.28.35
Izabela Bagińska
Abstract The changes brought about by the spread of COVID-19 require from entrepreneurs a new approach to the way they manage their businesses. Accounting offices are also facing a major challenge these days. In addition to the constant changes in tax regulations and the implementation of many new provisions concerning anti-crisis shields, the way of customer service in accounting offices has also changed as they had to adapt to the new reality. The aim of this article is to present the importance of improving the quality of accounting services in the pandemic era. The first part of the paper includes the scope of services and theoretical aspects of customer service in accounting offices in the era of SARS-CoV-2 as well as the characteristics of the concept of quality. Subsequently, the results of an anonymous survey conducted among entrepreneurs who are clients of accounting offices are presented, which contributed to the formulation of conclusions on the significance of customer service quality in accounting offices. The article highlights the significant changes in the way tasks are performed in accounting firms and financial departments. Among the modern methods of providing accounting services, two have been selected which (according to the respondents) will significantly effect on the service providing quality (in particular by limiting personal contact of contractors).
摘要新冠肺炎传播带来的变化要求企业家对他们的企业管理方式采取新的方法。如今,会计部门也面临着重大挑战。除了税务法规的不断变化和许多关于反危机保护的新规定的实施外,会计事务所的客户服务方式也发生了变化,因为他们必须适应新的现实。本文的目的是介绍在疫情时代提高会计服务质量的重要性。论文的第一部分包括严重急性呼吸系统综合征冠状病毒2型时代会计师事务所客户服务的服务范围和理论方面,以及质量概念的特点。随后,介绍了在会计师事务所客户企业家中进行的一项匿名调查的结果,这有助于就会计师事务所客户服务质量的重要性得出结论。这篇文章强调了会计师事务所和财务部门执行任务方式的重大变化。在提供会计服务的现代方法中,选择了两种(根据受访者的说法)将对提供服务的质量产生重大影响(特别是通过限制承包商的个人接触)。
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引用次数: 0
Dimensions and Factors that Determine Integration of Small-Scale Sources in the Structures of Virtual Power Plants 虚拟电厂结构中决定小型源集成的尺度和因素
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-05-19 DOI: 10.30657/pea.2022.28.22
R. Kucęba
Abstract In the paper the author has attempted to achieve two convergent objectives: cognitive and empirical ones. The cognitive goal constituted an analysis of the definitions of virtual organi-sations and their adaptation while defining Virtual Power Plants (VPPs). When discussing the discourse in the area of virtual organisations, the author has attempted to justify the fact that the terminology pertaining to virtual organisations should constitute the foundations for defining Virtual Power Plants. With such an assumption, a vital importance has been assigned to co-sharing of “soft” resources – key competencies, and also organisational (managerial) integration. In the context of the adopted definitions, the distributed structure of virtual power plant has been em-bedded into four layers of Smart Grid: Customer Technology, Operational Technology, Smart Metering, Energy Management System. A measurable value of the conducted discourse has been aggregation of management functions of VPP, carried out in the four-layer structure of Smart Grid. In turn, the empirical objective was to determine and distinguish, based on the conducted expert research, the factors that determine the development of small-scale energy sector, including re-newable energy sources and prosumer installations – simultaneously determining the inclination of distributed electricity producers to mutual integration in the structures of virtual power plants. Assuming, in accordance with the definitions and discourse included in the first part of the paper, that the determined factors, among others, creating virtual power plants are not only of techno-logical nature, the author has developed four portfolios of these factors. They include the following ones: technological, economic (including micro- and macro-economic), environmental, and social. The experts participating in the research could select 5 factors from each of the developed portfolio which in their opinion determined the inclination of distributed electricity producers to integrate their sources in the structures of virtual power plants. A measurable value of the empirical part has been aggregating the determinants generated and distinguished in the research process.
在本文中,作者试图达到两个趋同的目标:认知目标和经验目标。认知目标是在定义虚拟电厂时对虚拟组织的定义及其适应性进行分析。在讨论虚拟组织领域的话语时,作者试图证明一个事实,即与虚拟组织有关的术语应该构成定义虚拟发电厂的基础。在这样的假设下,“软”资源——关键能力——的共同共享以及组织(管理)整合被赋予了至关重要的意义。在采用的定义背景下,虚拟电厂的分布式结构被嵌入到智能电网的四个层面:客户技术、运营技术、智能计量、能源管理系统。在智能电网的四层结构中对VPP的管理功能进行聚合,是所进行话语的可测量值。反过来,经验目标是根据所进行的专家研究,确定和区分决定小规模能源部门发展的因素,包括可再生能源和生产消费者装置,同时确定分布式电力生产者在虚拟发电厂结构中相互整合的倾向。假设,根据本文第一部分的定义和论述,除了其他因素外,创建虚拟发电厂的确定因素不仅具有技术性质,作者已经开发了这些因素的四个组合。它们包括以下方面:技术、经济(包括微观和宏观经济)、环境和社会。参与研究的专家可以从每个已开发的投资组合中选择5个因素,他们认为这些因素决定了分布式发电企业在虚拟电厂结构中整合其源的倾向。实证部分的可测量值是对研究过程中产生和区分的决定因素的集合。
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引用次数: 1
The Effect of Formal and Informal Regulations on Industrial Effluents and Firm Compliance Behavior in Malaysia 马来西亚正式和非正式法规对工业废水和企业合规行为的影响
IF 2.3 Q3 ENGINEERING, INDUSTRIAL Pub Date : 2022-05-19 DOI: 10.30657/pea.2022.28.23
Mohd Nasir Nawawi, H. Samsudin, Jumadil Saputra, Katarzyna Szczepańska-Woszczyna, S. Kot
Abstract The rapid development of the manufacturing sector has been causing industrial effluents pollution. The practice of environmental regulation in the emerging economy focused on the externalities impact of industrialization. In conjunction with the issue, this study examines the effect of formal and informal regulation on the industrial effluent act and the firm compliance behavior in Malaysia. This quantitative study uses a survey questionnaire (structured) and involved 42 factories of three industries, namely food and beverages, textiles, and paper in Penang, Kedah, and Perlis. The data were analyzed using non-parametric tests: The Chi-Square, Mann-Whitney, and Spearman’s Rho. This study uses the firm behavior theory as the framework, and our non-parametric analyses showed that the traditional enforcement and fined probability could significantly affect compliance levels. We also find the market, consumer, competitor, and investor pressure positively influence firm compliance. The empirical results suggest effective enforcement of environmental regulation and the role of non-regulation must be empowered as a support mechanism for pollution control.
摘要制造业的快速发展造成了工业废水的污染。新兴经济体的环境监管实践侧重于工业化的外部性影响。结合这一问题,本研究考察了正式和非正式监管对马来西亚《工业废水法》和企业合规行为的影响。这项定量研究使用了一份调查问卷(结构化),涉及槟城、吉打和佩利斯三个行业的42家工厂,即食品和饮料、纺织和造纸。使用非参数检验对数据进行分析:Chi Square、Mann-Whitney和Spearman的Rho。本研究以企业行为理论为框架,非参数分析表明,传统的强制执行和罚款概率会显著影响合规水平。我们还发现,市场、消费者、竞争对手和投资者压力对公司合规性有积极影响。实证结果表明,环境监管的有效实施和非监管的作用必须作为污染控制的支持机制。
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引用次数: 10
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