Microstructural, Structural, and Thermal Characterization of Annealed Carbon Steels

Lara-Guevara, Alberto; Ortiz-Echeverri, César J.; Rojas-Rodriguez, I.; Mosquera, Julio Cesar Mosquera; Calderón, Hernando Ariza; Ayala-Garcia, I.; Rodríguez‐García, Mario E.

doi:10.1007/s10765-016-2105-6

Cited by 10 publications

(5 citation statements)

References 15 publications

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“…FWHM of PP, TPO-CWP, and TPO-E-I were 0.5393, 0.4301, and 0.4248°, respectively. According to Lara-Guevara et al [22], a recrystallization process occurs when the FWHM value decreases. TPO-CWP and TPO-E-I are recrystallized as a result of the reextrusion.…”

Section: Structural Propertiesmentioning

confidence: 99%

Effect of the thermomechanical reprocessing conditions on polypropylene composites based on automotive waste parts: path to a circular economy?

Garcia-Vazquez

Martinez‐Hernandez

Trujillo-Barragán

et al. 2022

Preprint

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This paper is focused on the study of the waste car bumper samples and their transformation by re-extrusion-injection. Car bumpers are formed by crystalline phases of polypropylene (PP), talc, and amorphous ethylene propylene diene monomer (EPDM). The thermal, mechanical, and structural properties of the recycled material strongly depend on the process used for the extrusion and injection. The FWHM of the X-ray diffraction patterns was used to study the recrystallization phenomenon in PP, and the result had a direct correlation with the findings obtained by Differential Scanning Calorimetry (DSC). Remaining micro paint particles from the waste car bumpers involved in the recycled extrusion-injection process affect the mechanical properties, and their size and toughness could affect injection. Removal of these particles could improve the mechanical properties of recycled PP. Automotive parts based on polypropylene can be recycled for the automotive industry by the production of the same kind of products, and even for other field. It proposed a methodology and metrology to know the accurate chemical composition and its relationship with the properties of PP-based materials to find applications in different fields that allow to development of a circular economy framework.

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Section: Structural Propertiesmentioning

confidence: 99%

Effect of the thermomechanical reprocessing conditions on polypropylene composites based on automotive waste parts: path to a circular economy?

Garcia-Vazquez

Martinez‐Hernandez

Trujillo-Barragán

et al. 2022

Preprint

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“…Photoacoustic technique was used to observe amplitude and phase signal behaviors in the sample [18,19]. A thermal diffusion model was used to calculate the pressure at the photoacoustic gas chamber [20], with the simplification for the thermally thick and optically opaque regime [21] according to the following equation:…”

Section: Thermal Diffusivitymentioning

confidence: 99%

“…where A is a constant that contains geometric parameters including factors as gas thermal properties, light beam intensity, and room temperature, f is the frequency scan, and f c is the cutoff which separates thick and thin regimens. The cutoff is related to thermal diffusivity α and the sample thickness l by the following equation [21]:…”

Section: Thermal Diffusivitymentioning

confidence: 99%

Analysis of the Absorption Phenomenon through the Use of Finite Element Method

Robles-Agudo¹,

Tejeda²,

Muñoz³

et al. 2020

Modern Spectroscopic Techniques and Applications

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In this text, a numerical model using the finite element method (FEM) is developed to describe absorption phenomena using the Beer-Lambert law. Numerical results are compared against experimental measurements made on alpha brass, characterized by photothermal radiometry (PTR). Results from the numerical analysis are in good agreement with the measurements obtained from the radiometry tests. In this technique the material is subjected to a laser heating, producing a thermal wave that is captured with a detector by means of the amplitude and phase parameters. The analysis of the data obtained from six samples provides information about their thermal properties, such as conductivity and diffusivity, which can be correlated with structural changes in a material. Results from this research lead to the characterization of mechanical properties of metallic materials.

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“…A positive correlation between Vickers microhardness and PTR amplitude images was found, in the characterization of SAE4320H Automotive Steel, indicating that the annealing process increases the PTR signal. This methodology allows the determination of the changes in the Vickers microhardness from a non-contact and remote method as in PTR [8].…”

Section: Introductionmentioning

confidence: 99%

“…PTR had been used to obtain sample thermal images of samples of Kunial brass to determine the effect of the precipitation heat treated on the metallurgical and mechanical properties [7] and were applied to, in the Thermal and Structural Characterization of Copper-Steel Bonding Interfaces Produced by Impact Welding [9], PTR had been applied in the Microstructural, Structural, and Thermal Characterization of Annealed Carbon Steels [8].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Automotive Aluminum AA356 by Photo Thermal Radiometric Spectroscopy

Guevara¹,

Minerva²,

Placencia³

et al. 2021

MSCE

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Microstructural, Structural, and Thermal Characterization of Annealed Carbon Steels

Cited by 10 publications

References 15 publications

Effect of the thermomechanical reprocessing conditions on polypropylene composites based on automotive waste parts: path to a circular economy?

Effect of the thermomechanical reprocessing conditions on polypropylene composites based on automotive waste parts: path to a circular economy?

Analysis of the Absorption Phenomenon through the Use of Finite Element Method

Characterization of Automotive Aluminum AA356 by Photo Thermal Radiometric Spectroscopy

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