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Additive manufacturing offers the ability to produce complex, flexible structures from materials like thermoplastic polyurethane (TPU) for energy-absorption applications. However, selecting optimal structural parameters to achieve desired mechanical responses remains a challenge. This study aims to investigate the influence of key structural characteristics on the energy absorption and dissipation behavior and the deformation process of 3D-printed flexible TPU line-oriented structures.

Samples with varying line orientations and infill densities were fabricated using material extrusion and subjected to quasi-static compression tests. The design of experiments methodology explored the significance of design variables and their interaction effects on energy absorption and dissipation.

The results revealed a statistically significant interaction between infill density and orientation, highlighting their combined influence; however, the effect was less pronounced compared to infill density alone. For low-density structures, changing the orientation from 0°/90° to 45°/−45° and increasing infill density enhanced energy absorption and dissipation, while high-density structures exhibited unique energy absorption behavior influenced by deformation patterns and heterogeneity levels. This study facilitates the prediction of mechanical responses and selection of suitable TPU line-oriented printed parts for energy absorbing applications.

To the best of the authors’ knowledge, the present work have investigated for the first time the energy-related responses of flexible line-oriented TPU structures highlighting the distinction between the low and high density structures.

This study deals with the results of an investigation to recognize and prioritize key and critical success factors to achieve predetermined goals in strategic plans of SAIPA Press Co., producer of Automobile parts.

In this study, Sirus and Moghaddam model, 2007, is used to identify critical success factors. also, a descriptive statistical method is used to analyze population data, and Friedman method to answer the questions

Recognition the 24 key success factors, priority of them, being as the critical success factors or core competencies are the results of this research.

Key success factors determine those performance fields that manager should notice permanently. These factors have most importance in executing this strategy

Key factors concepts for success is not a new revolution in occupation. These concepts were suggested by Ronald Daniel in 1960s. But nowadays, these concepts and approaches become more powerful. The most successful organizations in new millennium are those that from one hand have brilliant strategic views and from the other hand have guidelines and tactics to achieve success Key success goals and factors are both necessary to conduct organization to its mission. Key success factors make goals powerful directly and make mission powerful indirectly.