Browsing by Keyword "Impact"
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Item Business in climate or climate in business?(2011-08) Sepúlveda, Joel; Mendizabal, Maddalen; Tecnalia Research & InnovationPurpose: The aim of this paper is to present a new methodological approach to help companies improve their decision-taking capacity regarding corporate social responsibility (CSR) in the context of climate change (CC). Design/methodology/approach: The study was conducted by combining a wide variety of sources including articles and research reports. Taking into account the complexity of adapting in a context of climate change, the paper developed a simplified conceptual model that integrates multi-criteria analysis. A vulnerability matrix was generated as a combination of adaptive capacity, exposure and sensitivity and how to measure the magnitude, persistence, uncertainty, temporality, degree of importance in combination with the impacts. Findings: The first results reveal that activities related to water resources or natural ecosystems are more important than those related to energy or tourism sectors, and that there is a relationship between opportunities and adaptation needs. Practical implications: The paper documents the inverse relationship between adaptation measures and opportunities in a study that may be a starting-point for further research into empirical observations of sector vulnerability and the impact and integration of the factor of resilience. Originality/value: The paper provides a common language to use in the business world for concepts related to climate change. It provides a methodological approach for finding solutions to the problem of resource optimisation in companies and helps to find new business opportunities for sectors.Item Design and Validation of New Torsion Test Bench for Intermediate Strain Rate Testing(2023-01) Bhujangrao, T.; Froustey, C.; Darnis, P.; Veiga, F.; Guérard, S.; Mata, F. G.; Tecnalia Research & InnovationBackground: Many traditional experimental testing devices like hydraulic testing machines, Split Hopkinson bar technique, etc. are available to recreate the same material behaviour that occue during manufacturing processes at different strain rates. But the fact is that a state of large equivalent strain with dominant shear strain at intermediate strain rate is not easily achievable using these devices. Objective: The goal of this work is to design and develop a new dynamic torsion device based on the principle of the flywheel at intermediate strain rates in order to study the shear behaviour of the material that typically occurred during the manufacturing process. Methods: A general description of the testing device is given systematically in this paper. Hopkinson bar sensor as a load measuring technique is used to measure the applied torque on the specimen and the shear deformation of the specimen is measured by the grid pattern technique. Results: After the design and manufacturing of torsion device, some experimental tests on AA7075-T6 alloy are presented for validation of the device. The preliminary experimental results are attractive. It shows that the material can be tested at an intermediate strain rate by varying the speed of the flywheel. Conclusions: The use of this newly designed torsion device with an appropriate methodology of load and deformation measurement, finally allows us to obtain the mechanical pure shear behavior of materials under intermediate strain rate loading.Item Development of a new mixed (ferritic-ausferritic) ductile iron for automotive suspension parts(2003) Aranzabal, J.; Serramoglia, G.; Goria, C. A.; Rousière, D.; Centros PRE-FUSION TECNALIA - (FORMER)Weight reduction is of great significance in the automotive industry, having direct consequences in materials used in car production and their development. In this context Teksid France and Inasmet have worked to improve practical knowledge on new ferrous casting alloys, particularly ADI. This material has been validated for suspension parts, but impact test results have caused some concern: energy values obtained were higher than those for ferritic grades, but ductility, measured as deflection, was lower. To improve this property, a material with a mixed proeutectoid ferrite plus ausferrite structure has been developed. Mechanical characterization shows tensile and proof stress, together with hardness, similar to pearlitic grades, and ductility at the same level as ferritic grades. This new type of ductile iron could be used for applications where ADI is restricted owing to excessive hardness. Validation in a suspension part for the automotive industry is foreseen in the near future.