Determination and review of specific heat capacity measurements during isothermal cure of an epoxy using TM-DSC and standard DSC techniques

McHugh, J.; Fideu, Paulin; Herrmann, A.; Stark, Wolfgang

doi:10.1016/j.polymertesting.2010.04.004

Cited by 62 publications

(43 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Heat capacity of cartilage and synovial fluid: heat capacity of human cartilage samples (n¼ 6) and synovial fluid (n¼ 3) were determined using a general published differential scanning calorimeter (DSC) method (McHugh et al, 2010). Briefly, the DSC heat flow signal from the sample was recorded between 10 1C and 60 1C with a heat rate of 10 1C/min (MDS-Q100, TA Instruments, New Castle, DE, USA).…”

Section: Experimental Determination Of the Model Parametersmentioning

confidence: 99%

Impact of synovial fluid flow on temperature regulation in knee cartilage

Moghadam

Abdel-Sayed

Camine

et al. 2015

Journal of Biomechanics

View full text Add to dashboard Cite

a b s t r a c tSeveral studies have reported an increase of temperature in cartilage submitted to cyclic sinusoidal loading. The temperature increase is in part due to the viscous behavior of this tissue, which partially dissipates the input mechanical energy into heat. While the synovial fluid flow within the intra-articular gap and inside the porous cartilage is supposed to play an important role in the regulation of the cartilage temperature, no specific study has evaluated this aspect. In the present numerical study, a poroelastic model of the knee cartilage is developed to evaluate first the temperature increase in the cartilage due to dissipation and second the impact of the synovial fluid flow in the cartilage heat transfer phenomenon. Our results showed that, the local temperature is effectively increased in knee cartilage due to its viscous behavior. The synovial fluid flow cannot significantly preventing this phenomenon. We explain this result by the low permeability of cartilage and the moderate fluid exchange at the surface of cartilage under deformation.

show abstract

Section: Experimental Determination Of the Model Parametersmentioning

confidence: 99%

Impact of synovial fluid flow on temperature regulation in knee cartilage

Moghadam

Abdel-Sayed

Camine

et al. 2015

Journal of Biomechanics

View full text Add to dashboard Cite

show abstract

“…Heat capacity of human cartilage samples (n¼ 3) was determined using DSC following the method of McHugh et al (2010). Briefly, the DSC heat flow signal from the sample was recorded between 10 1C and 60 1C with a heat rate of 10 1C/min using a differential scanning calorimeter MDS-Q100 (TA Instruments, New Castle, DE, USA).…”

Section: 4mentioning

confidence: 99%

Intrinsic viscoelasticity increases temperature in knee cartilage under physiological loading

Abdel-Sayed

Moghadam

Salomir

et al. 2014

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

Temperature Magnetic resonance imagingDifferential scanning calorimetry a b s t r a c t Metabolism of proteoglycans and hyaluronic acid has been shown to be temperaturedependent in cartilage explants, with optimal anabolic effects between 36 1C and 38 1C. At rest, the temperature of human knee has a value of around 33 1C. We aim to show in this study that viscoelastic properties of healthy human cartilage allow its temperature to reach those optimal temperatures during physiological mechanical loadings. We developed a model allowing to determine the temperature increase in cartilage due to viscous dissipation. The model had three parameters, which were determined experimentally. The first parameter was the energy dissipated by cartilage samples submitted to cyclic stimulation. It was obtained with standard in vitro mechanical testing. The second parameter was the cartilage heat capacity and was measured in vitro with differential scanning calorimetry. Finally, the third parameter was the time constant of cartilage heat transfer and was obtained with in vivo magnetic resonance thermometry performed on four volunteers. With these experimentally determined parameters, the model predicted that cartilage dissipation is sufficient to raise the temperature in healthy knee cartilage from 33 1C to 36.7 1C after a 1 h walking. These results showed that intrinsic viscoelastic properties of the cartilage could induce a temperature increase optimal for the production of proteoglycans and hyaluronic acid. Interestingly, degenerated cartilage did not present high enough viscoelastic properties to significantly induce a temperature increase. Taken together, these data suggest an association between cartilage dissipation and its homeostasis.

show abstract

“…Thes pecific heat capacity was determined by measuring the difference in heat flux between the sample and the blank curve at the operation temperature range.F urther information about the method and its applications can be found in Refs. [23,24].…”

mentioning

confidence: 99%

Effect of Microstructure on Thermal Conduction within Lithium‐Ion Battery Electrodes using Discrete Element Method Simulations

2016

View full text Add to dashboard Cite

Heat transfer within lithium‐ion‐battery electrodes constitutes an important issue regarding not only battery performance but also safety aspects. The objective of this study is to gain insight into the thermal behavior of particles forming lithium‐ion electrodes to understand the effect of microstructural parameters on heat conduction and, ultimately, improve electrode design. To this end, a discrete element method (DEM) approach is proposed in which a contact model is included. Thus, individual particles are modelled within the electrode and their temperature values are tracked just after the copper substrate, on which the particles are coated, is heated from 273 to 350 K. Furthermore, by adjusting numerous simulations with different structural parameters, namely porosity, particle size, and electrode thickness, the effect of these parameters on the heating rate is investigated.

show abstract

Determination and review of specific heat capacity measurements during isothermal cure of an epoxy using TM-DSC and standard DSC techniques

Cited by 62 publications

References 18 publications

Impact of synovial fluid flow on temperature regulation in knee cartilage

Impact of synovial fluid flow on temperature regulation in knee cartilage

Intrinsic viscoelasticity increases temperature in knee cartilage under physiological loading

Effect of Microstructure on Thermal Conduction within Lithium‐Ion Battery Electrodes using Discrete Element Method Simulations

Contact Info

Product

Resources

About