Article
Thermodynamics
Gavin White, Alastair Hales, Yatish Patel, Gregory Offer
Summary: Thermal conductivity is a fundamental parameter in battery pack models, but current measurement methods have large errors. This paper presents three novel methods for measuring thermal conductivity and thermal diffusivity with an accuracy of 5.6%. These methods, designed for materials like lithium-ion batteries, maintain a symmetrical thermal boundary condition around the middle of the cell, leading to improved measurement accuracy. These methods represent the future for thermal characterization of lithium-ion batteries.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Akos Lakatos, Attila Csik, Istvan Csarnovics
Summary: This paper presents research results on the performance of aerogel materials in terms of thermal conductivity, specific heat, and combustion heat, providing important references for designers and researchers. The study found that temperature and external load significantly affect thermal conductivity, while thickness variations have minor impacts. Additionally, the combustion heat of aerogel was measured and investigated before and after combustion using advanced microscopy techniques.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Food Science & Technology
Callebe Camelo-Silva, Marcio Augusto Ribeiro Sanches, Renata Moraes Brito, Ivano Alessandro Devilla, Loyse Tussolini, Paula Becker Pertuzatti
Summary: This study aimed to determine the thermophysical properties and antioxidant capacity of buriti pulp with different concentrations of Brix. The results showed that changes in Brix concentration affected the total solids, moisture content, and specific mass of the pulp, but did not influence the specific heat, thermal diffusivity, and thermal conductivity. The antioxidant capacity of buriti pulp varied depending on the method used, with different ranges for the ABTS and DPPH methods.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Helena Perez-Martin, Paul Mackenzie, Alex Baidak, Conchur M. O. Bradaigh, Dipa Ray
Summary: This study evaluated the crystallization behavior of carbon fiber/poly(etherketoneketone) (CF/PEKK) composites and found that different thermal cycles affected the crystallinity, with the inclusion of carbon fibers increasing the proportion of secondary crystallization and slowing down the crystallization kinetics. The optimal isothermal hold temperatures during cooling for CF/PEKK were estimated to be in the range of 220-260 ℃.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Geosciences, Multidisciplinary
Jianhua Ge, Baohua Zhang, Zili Xiong, Lanfang He, Heping Li
Summary: The study found that the thermal diffusivity and thermal conductivity values of harzburgite and dunite from the Luobusha ophiolite are affected by temperature and pressure changes. Through numerical simulations, the thermal evolution of the Tibet region was explored.
GEOSCIENCE FRONTIERS
(2021)
Article
Chemistry, Physical
A. G. Gamzatov, A. B. Batdalov, A. M. Aliev, Sh. K. Khizriev, V. V. Khovaylo, A. Ghotbi Varzaneh, P. Kameli, I. Abdolhosseini Sarsari, S. Jannati
Summary: This paper presents a detailed investigation of the thermal transport properties of Ni(50)Mn(28)G(a22-x)(Cu, Zn)(x )(x = 0; 1.5) alloys. It is found that replacing Ga atoms with Zn or Cu atoms leads to a convergence of magnetic and martensitic phase transition temperatures. The anomalous behavior of thermal diffusivity and thermal conductivity in the phase transition region is attributed to the coexistence of martensite-austenite phases and the effect of latent heat. The main mechanism of phonon scattering is local structural inhomogeneities, which decrease sharply during the transition from martensite to austenite phase.
Article
Thermodynamics
Waqar Ahmed, Z. Z. Chowdhury, S. N. Kazi, Mohd Rafie Bin Johan, Ali H. Abdelrazek, H. Fayaz, Irfan Anjum Badruddin, M. A. Mujtaba, Manzoore Elahi M. Soudagar, Naveed Akram, Shahid Mehmood, Muhammad Shakeel Ahmad, Sarfaraz Kamangar, T. M. Yunus Khan
Summary: This study investigates the thermal and hydrodynamic characteristics of different concentrations of ZnO-DW nanofluids in a closed single-tube circular heat exchanger through experimental and ANSYS modeling methods. The results indicate that the 0.1% ZnO-DW based nanofluids exhibit the highest heat transfer coefficient and efficiency. Both experimental and numerical results show promising and similar outcomes.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Hubert Langevin, Nicolo Giordano, Jasmin Raymond, Louis Gosselin
Summary: An apparatus and analytical approach were developed to assess thermal conductivity and thermal diffusivity in shallow unconsolidated deposits using an oscillatory thermal response test (O-TRT). After validation through numerical modeling, the results demonstrate that the analytical approach, with the use of correction factors, can accurately estimate thermal conductivity and thermal diffusivity with an accuracy of less than 2%. This study shows that O-TRTs are a valuable method for estimating thermal conductivity and thermal diffusivity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
A. G. Gamzatov, A. B. Batdalov, N. Z. Abdulkadirova, A. M. Aliev, V. V. Khovaylo, T. D. Thanh, N. T. Dung, S. -C. Yu
Summary: This paper presents the results of a study on the magnetization, specific heat, thermal diffusivity, thermal conductivity, and magnetocaloric effect of Pr0.7Sr0.3_xBaxMnO3 samples. It is found that the increase in Ba concentration leads to a decrease in Curie temperature, increase in disorder parameter, and noticeable increase in thermal conductivity of the ferromagnetic phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Thermodynamics
Guangpeng Feng, Lin Qiu, Yanhui Feng, Xinxin Zhang
Summary: A topology optimization framework based on isotropic material is developed to design highly thermal conductive porous structures. The study shows that by optimizing the microstructure, it is possible to achieve thermal conductivity and mass diffusivity close to theoretical bounds. The selective laser melting technique enables the accurate fabrication of the microstructure of these lattice materials.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Geochemistry & Geophysics
Zili Xiong, Baohua Zhang, Jianhua Ge, Shuangmeng Zhai, Xinzhuan Guo
Summary: The heat transport properties of two natural alkali feldspars were studied at high temperatures and pressures, showing a decrease in thermal diffusivity and thermal conductivity with increasing temperature. Phonon conduction was suggested as the dominant mechanism, and the samples also exhibited a positive pressure dependence.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Nanoscience & Nanotechnology
G. Giovinco, S. Sibilia, A. Maffucci
Summary: This paper proposes a new technique to evaluate the thermal conductivity and diffusivity of thin strips made by graphene nanoplatelets (GNP). The technique combines experimental characterization with infrared camera and an electro-thermal model to analyze the transient behavior and obtain the thermal parameters. The methodology is successfully validated by applying it to commercial graphene strips and benchmarking against manufacturer-provided values.
Article
Engineering, Electrical & Electronic
B. Pan, D. Zhu, M. Zhang
Summary: This paper introduces a flexible thermal sensor that can be used on robotic fingers to achieve rapid measurement of thermal conductivity and thermal diffusivity for different materials. By a single touch of the robot finger, the thermal properties of an object can be measured in less than 2 seconds.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Yehong Chen, Congyuan Zeng, Huan Ding, Selami Emanet, Paul R. Gradl, David L. Ellis, Shengmin Guo
Summary: Additive manufacturing has opened up new possibilities for using high-performance alloys in complex components in various industries. This paper examines the thermophysical properties of GRCop-84 and GRCop-42 produced using laser powder bed fusion, specifically focusing on thermal conductivity and thermal expansion. Understanding and controlling these properties is important for establishing process capabilities and design guidelines.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jianshu Gao, Hamidreza Zobeiri, Huan Lin, Danmei Xie, Yanan Yue, Xinwei Wang
Summary: By altering the structure of graphene oxide paper, the electrical conductivity and thermal diffusivity can be adjusted, revealing a coherent-linear relationship between conductivity and diffusivity. A two-component parallel structure is proposed to interpret the observed discovery.
Article
Polymer Science
Aurelien Roggero, Eric Dantras, Colette Lacabanne
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
(2017)
Article
Polymer Science
G. Haddou, A. Roggero, J. Dandurand, E. Dantras, P. Ponteins, C. Lacabanne
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Polymer Science
Geoffrey Haddou, Jany Dandurand, Eric Dantras, Huynh Maiduc, Hoang Thai, Nguyen Vu Giang, Tran Huu Trung, Philippe Ponteins, Colette Lacabanne
JOURNAL OF APPLIED POLYMER SCIENCE
(2019)
Article
Polymer Science
Jeremie Audoit, Luis Quiroga Cortes, Sebastien Racagel, Antoine Lonjon, Eric Dantras, Colette Lacabanne
JOURNAL OF APPLIED POLYMER SCIENCE
(2019)
Article
Polymer Science
G. Rival, T. Paulmier, E. Dantras
POLYMER DEGRADATION AND STABILITY
(2019)
Article
Polymer Science
Mike Abidine Alexandre, Eric Dantras, Colette Lacabanne, Emile Perez, Sophie Franceschi, Damien Coudeyre
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Article
Polymer Science
V Henri, E. Dantras, C. Lacabanne, A. Dieudonne, F. Koliatene
POLYMER DEGRADATION AND STABILITY
(2020)
Article
Thermodynamics
Louise Lods, Tutea Richmond, Jany Dandurand, Eric Dantras, Colette Lacabanne, Jean-Michel Durand, Edouard Sherwood, Gilles Hochstetter, Philippe Ponteins
Summary: This research successfully tailored composites using technical bamboo fibers extracted through mild chemical and mechanical treatment, with SEM images showing the absence of voids between technical fibers and the polyamide matrix. Dynamic mechanical analyses revealed a significant improvement in the shear glassy modulus of the composite material.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Baptiste Martin, Eric Dantras, Antoine Lonjon, Lydia Laffont, Colette Lacabanne
Summary: Polymer-based magnetoelectric composites with high-performance magnetoelectric effect were prepared by decorating nickel-coated silver nanowires onto a P(VDF-TrFE) matrix, showing significant coupling coefficient. Superior magnetic properties, enhanced coercive field, and strong magnetic anisotropy were observed.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Engineering, Manufacturing
Guilhem Rival, Eric Dantras, Thierry Paulmier
Summary: This study compares the behavior of PEEK composites with and without short carbon fibers (SCF) in their pristine state and after electronic irradiations. The results show that SCF can reduce the risk of electrostatic discharges (ESD) in space. Additionally, SCF stabilizes the mechanical behavior and surface potential relaxation of the composites after irradiations.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Polymer Science
Florian Cuminet, Sylvain Caillol, Eric Dantras, Eric Leclerc, Sebastien Lemouzy, Cedric Totee, Olivier Guille, Vincent Ladmiral
Summary: In this study, a novel dynamic material was synthesized from α,α-difluorodicarboxylic acid (P-DAF) and a commercial diepoxy (BDGE). The material showed a high gel content, flowability when heated, and successful reshaping under mild conditions.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Ceramics
N. Dintilhac, S. Lewandowski, M. Planes, A. S. Lectez, E. Dantras
Summary: This study aims to improve the dielectric experimental signal of non-polar Linear Low Density Polyethylene by introducing carbonyl groups as dipolar probes through gamma irradiation, resulting in an increased signal to noise ratio. Satisfactory Dynamic Dielectric Spectroscopy results can be obtained with virtually no chemical and physical changes in the gamma irradiated samples by irradiating the polymer with the lowest dose.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
