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An interface finite element for three‐dimensional problems based on the penalty method is presented. The proposed element can model joints/interfaces between solid finite elements and also includes the propagation of damage in pure mode I, pure mode II and mixed mode considering a softening relationship between the stresses and relative displacements. Two different contact conditions are considered: point‐to‐point constraint for closed points (not satisfying the failure criterion) and point‐to‐surface constraint for opened points. The performance of the element is tested under mode I, mode II and mixed mode loading conditions.

The proliferation of bibliometric review articles is a true reflection of how bibliometrics is gaining popularity and has been widely adopted in various disciplines. The growing interest of scholars has encouraged us to dwell upon the what, why, when, how, and where of bibliometric literature reviews. The study explained the bibliometric review with the standpoint that it can be considered a strong review method for analyzing a large volume of data and scholars can supplement their traditional reviews with bibliometric reviews to strengthen their knowledge. This will help researchers to justify the (a) need for a study on the particular topic; (b) type or method of review chosen; (c) number of articles selected; (d) inclusion and exclusion criterion; (e) method of analysis; and (f) presentation of the findings.

The purpose of this paper is to investigate consumers’ willingness to accept irradiated food and the major factors related both to socio-demographic characteristics and to the perceived risk of consumers about the assumption of foods treated with novel technologies and irradiation, in particular, affecting their behavior. Consumers’ need for information has been investigated.

An online survey, involving 392 consumers living in Italy, was carried out to respond to the aim of the study. A Probit model was performed in order to identify major factors affecting the probability to accept food treated with ionizing radiation.

Findings show that the acceptability of irradiated foods is mainly affected by the consumers’ perceived risk to health consequent to their consumption. Equally influent are the socio-economic characteristics such as age, monthly income and geographical area in which consumers live.

This study provides some interesting suggestions both for policy makers and managers, primarily related to the need to start an effective promotion campaign aimed to familiarize the consumers about the principles, aims and benefits of irradiation technology.

Very few empirical studies have been carried out in order to evaluate the acceptability of foods products treated with ionizing radiation in Italy, where exist a growing problem related to the food loss and waste, and the need for information among consumers about the irradiated foods.

Adhesively bonded joints are gaining importance in the structural joining processes competing against welding and bolting processes. However, long-term behaviour of adhesively bonded joints is still an open question. Due to the increasing interest in adhesively bonded joints, mainly in the transports industry, there is a need to deep the knowledge about the fatigue behaviour of adhesive joints with metallic substrates allowing the development of reliable joints to resist cyclic loadings. The paper aims to discuss these issues.

An experimental research aiming at characterizing the fatigue behaviour of adhesively bonded aluminium substrates is presented in this paper, covering both fatigue crack propagation and global S-N behaviours. Double cantilever beam (DCB), end notch flexure (ENF) and double lap joints (DLJ) specimens built using the AA6061T651 substrate and epoxy adhesive were used to evaluate the pure modes I and II fatigue crack propagation rates and the S-N fatigue behaviours.

DCB and ENF specimens allowed the formulation of pure modes I and II fatigue crack propagation laws including the propagation thresholds. DLJs showed higher static shear strength than recommended by the manufacturer for aluminium substrates, but fatigue resistance of the DLJs was lower than suggested by the manufacturer. The fatigue damage process in the DLJs was dominated by a fatigue crack initiation process.

A consistent fatigue research on adhesively bonded aluminium substrates is presented covering in the same study aspects of fatigue crack propagation and fatigue crack initiation. Data reduction schemes involving both numerical and analytical procedures were followed. Proposed work constitutes a rigorous basis for future fatigue prediction models developments.

The purpose of this paper is to describe the work of IDMEC, a not‐for‐profit R&D private association located in Porto and Lisbon, Portugal.

The paper focuses on IDMEC's R&D activities, focusing on aeronautics.

Together IDMEC‐Porto and INEGI provide answers to R&D challenges in the broad area of aerostructures, from fracture and fatigue problems to advanced composites for space applications.

The paper offers a concise presentation of the IDMEC's R&D activities in the field of aeronautics.

The combined numerical-experimental approach has been presented. The purpose of this paper is to determine the critical rupture load of the notched components based on the cohesive zone modeling (CZM).

The 42CrMo4 steel (in normalized state) state has been tested and modeled using an eXtended finite element method (xFEM) philosophy with the CZM approach. In order to validate the numerically obtained critical load forces the experimental verification was performed.

The critical loads were determined for various notch configurations. The numerical and experimental values were compared. Based on this, a good agreement between experimental and numerical data is achieved. The relative error does not exceed 7 percent.

The presented procedure and approach is effective and simple for engineering applications. It is worth to underline that the obtained critical load values for notched components require only the static tensile test results and implementation of the presented route in numerical FEM, xFEM environment.

The presented methodology is actual and still developed. The scientific and engineering value of the presented numerical procedure is high.

This study aims to explore the mediating role of the motivation for learning in knowledge acquisition and knowledge transfer in students of higher education programs in business and management.

Quantitative correlational design. Data was collected from a sample of 366 students studying and working in the business and entrepreneurial sector in Ecuador. The instrument used was a Likert scale questionnaire. Correlation analyses were used to specify the relationships between variables. Multiple regression analysis was used to test the hypotheses.

The results evidenced the mediating effect of the motivation for learning on the relationship between knowledge acquisition and knowledge transfer of undergraduate and graduate students in higher education programs in the area of business and entrepreneurship.

The model investigated is a contribution to the literature since the variables have been little studied by the students as transfer channels, and there is a need to explore these relationships between variables in other productive sectors.

Organizations will be able to identify relevant factors in knowledge transfer, the motivation for learning for the context of working, create ideal conditions for knowledge flow and maintain a commitment to take advantage of this cooperation.

The results contribute to the three agents involved in knowledge transfer: students, educational institutions and organizations. Students can have a greater understanding of the skills they need to improve their learning and application of knowledge. Educational institutions will have a better understanding of and approach to developing competencies in their students.

This simple regression model enriches the current literature on the mediating effect of the motivation for learning on the relationship between knowledge acquisition and knowledge transfer in higher education institutions in Latin American countries.

This study aims to identify the growth pattern of research literature, most influential authors, most impactful documents and most relevant topics on sustainable development (SD) in higher education management (HEM) from 2000 to 2023.

The research approach used descriptive quantitative and bibliometric analysis. Scopus was used to retrieve data from 811 selected documents from 2000 to 2023. Data analysis used VOSviewer and R Biblioshiny.

The results showed intense development of sustainable development research in higher education management, especially in 2013–2023. Core literature was identified based on the volume of publications or citations from the perspective of authors, documents and keywords. Global research topics on SD in HEM focus on curriculum development and sustainable learning, sustainable higher education management and enhancing research and development of SD in HEM. The results of this research reveal the emerging intellectual structure in the field of educational management and provide reference points for academics who wish to study this discipline.

This study offers a valuable knowledge map for future research on sustainable development in higher education management. As a map, researchers can find core documents and current topics and identify potential research issues in this study.

The present work aims to prepare biocomposites blend based on linear low density polyethylene/ starch without using harmful chemicals to improve the adhesion between two phases. Also, the efficiency of essential oils as green plasticizers and natural antimicrobial agents were evaluated.

Barrier properties and biodegradation behavior of linear low density polyethylene/starch (LLDPE/starch) blends plasticized with different essential oils including moringa oleifera and castor oils wereassessed as a comparison with traditional plasticizer such as glycerol. Biodegradation behavior forLLDPE/starch blends was monitored by soil burial test. The composted samples were recovered then washed followed by drying, and weighting samples after 30, 60, and 90 days to assess the change in weight loss. Also, mechanical properties including retention values of tensile strength and elongation at break were measured before and after composting. Furthermore, scanning electron microscope (SEM) was used to evaluate the change in the morphology of the polymeric blends. In addition to, the antimicrobial activity of plasticized LLDPE/starch blends films was evaluated using a standard plate counting technique.

The results illustrate that the water vapor transition rate increases from 2.5 g m⁻² 24 h⁻¹ for LLDPE/5starch to 4.21 g m⁻² 24 h⁻¹ and 4.43 g m⁻² 24 h⁻¹ for castor and moringa oleifera respectively. Also, the retained tensile strength values of all blends decrease gradually with increasing composting period. Unplasticized LLDPE/5starch showed highest tensile strength retention of 91.6% compared to the other blends that were 89.61, 88.49 and 86.91 for the plasticized LLDPE/5starch with glycerol, castor and M. oleifera oils respectively. As well as, the presence of essential oils in LLDPE/ starch blends increase the inhibition growth of escherichia coli, candida albicans and staphylococcus aureus.

The objective of this work is to develop cost-effective and environmentally-friendly methods for preparing biodegradable polymers suitable for packaging applications.

The fuselage riveted lap-joints are susceptible to multiple site damage (MSD) and should be considered in damage tolerance analysis. This paper aims to investigate the stress intensity factor (SIF) and crack growth simulation for lap-joints based on three-dimensional (3D) finite element analysis.

The 3D finite element model of lap-joints is established by detailed representation of rivets and considering the rivet clamping force and friction. Numerical study is conducted to investigate the SIF distribution along the thickness direction and the effect of clamping force. A predictive method for the cracks propagation of MSD is then developed, in which an integral mean is adopted to quantify the SIF at crack tips, and the crack closure effect is considered. For comparison, a fatigue test of a lap-joint with MSD cracks is conducted to determine the cracks growth live and measure the cracks growth.

The numerical study shows that the through-thickness crack at riveted hole in lap-joints can be treated as mode I crack. The distribution of SIF along the thickness direction is inconstant and nonmonotonic. Besides, the increase in clamping force will lead to more frictional load transfer at the faying surfaces. The multiple crack growth simulation results agreed well with the experimental data.

The novelty of this work is that the SIF distribution along the thickness direction and the MSD cracks growth simulation for lap-joints are investigated by 3D finite element analysis, which can reflect the secondary bending, rivet clamping, contact and friction in lap-joints.