Simultaneous measurements of thermal conductivity and thermal diffusivity of insulators, fluids and conductors using the transient plane source (TPS) technique

Maqsood, Asghari; Amin, Nasir; Maqsood, M.; Shabbir, Ghulam; Mahmood, A.; Gustafsson, Stefan

doi:10.1002/er.4440180903

Cited by 37 publications

(17 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…My laboratory also developed the transient hot strip (THS) and transient plane source (TPS) techniques to measure thermal transport properties of insulators, conductors, high-Tc superconductors, and liquids [1]. I am the first researcher to introduce the subject of thin film technology at the University level in Pakistan [2].…”

Section: Research and Publicationsmentioning

confidence: 99%

My journey in physics

Maqsood

2017

Can. J. Phys.

View full text Add to dashboard Cite

I am Professor Asghari Maqsood, Ph.D., one of the leading women physicists of Pakistan. In Pakistan a very small fraction of physicists are women and I have worked very hard to be recognized in a field dominated by men. I have been associated with the field of research and teaching in physics for the last 43 years. My field of specialization is materials science and solid state physics. This is my journey from a school girl in Abbottabad to becoming a leader and mentor in physics in Pakistan.Key words: leading woman, physics, leader.Résumé : Je suis la professeure Dr Asghari Maqsood, une femme physicienne de premier plan au Pakistan. Au Pakistan, une très petite fraction des physiciens sont des femmes et j'ai travaillé très dur pour être reconnue dans un champ dominé par les hommes. Je fais de la recherche et de l'enseignement en physique depuis quarante trois ans. Mon champ de spécialisation est la science des matériaux et la physique de l'état solide. Ceci est mon histoire, commençant avec la petite fille à Abbottabad pour devenir une leader et une mentor en physique au Pakistan. [Traduit par la Rédaction]Mots-clés : femme de premier plan, physique, leader.

show abstract

Section: Research and Publicationsmentioning

confidence: 99%

My journey in physics

Maqsood

2017

Can. J. Phys.

View full text Add to dashboard Cite

show abstract

“…This material characterization typically involves estimating material properties, such as thermal effusivity and thermal conductivity, for use in industrial applications, such as monitoring the quality of products, for which initial conditions can be controlled and the duration of contact can be long [12]. In contrast to previous transient plane source methods that required a sensor to be sandwiched between two samples of the material [23], [24], the single-sided approach [22] only requires that the sensor make frontal contact with a sample of the material, making it appropriate for tactile sensors that cover a robot. For this approach, the heater and temperature sensor are on a thermally insulating backing.…”

Section: B Long-duration Contact With Consistent Initial Conditionsmentioning

confidence: 99%

Material Recognition from Heat Transfer given Varying Initial Conditions and Short-Duration Contact

Bhattacharjee¹,

Wade²,

Kemp³

2015

Robotics: Science and Systems XI

View full text Add to dashboard Cite

Abstract-When making contact with an object, a robot can use a tactile sensor consisting of a heating element and a temperature sensor to recognize the object's material based on conductive heat transfer from the tactile sensor to the object. When this type of tactile sensor has time to fully reheat prior to contact and the duration of contact is long enough to achieve a thermal steady state, numerous methods have been shown to perform well. In order to enable robots to more efficiently sense their environments and take advantage of brief contact events over which they lack control, we focus on the problem of material recognition from heat transfer given varying initial conditions and short-duration contact. We present both modelbased and data-driven methods. For the model-based method, we modeled the thermodynamics of the sensor in contact with a material as contact between two semi-infinite solids. For the data-driven methods, we used three machine learning algorithms (SVM+PCA, k-NN+PCA, HMMs) with time series of raw temperature measurements and temperature change estimates. When recognizing 11 materials with varying initial conditions and 3-fold cross-validation, SVM+PCA outperformed all other methods, achieving 84% accuracy with 0.5 s of contact and 98% accuracy with 1.5 s of contact.

show abstract

“…In this technique, a TPS element is used both as a constant heat source and a sensor of temperature. For data collection the TPS element (20 mm in diameter), sandwiched between two halves of the sample in a bridge circuit [16,17], was used. When a sufficiently large direct current is passed through the TPS element, its temperature changes and there is a voltage drop across the TPS element.…”

Section: Measurement Techniques and Sample Characterizationmentioning

confidence: 99%

Modeling of Effective Thermal Conductivity of Dunite Rocks as a Function of Temperature

Aurangzeb

Mehmood

Maqsood³

2008

Int J Thermophys

Self Cite

View full text Add to dashboard Cite

The thermal conductivity, thermal diffusivity, and heat capacity per unit volume of dunite rocks taken from Chillas near Gilgit, Pakistan, have been measured simultaneously using the transient plane source technique. The temperature dependence of the thermal transport properties was studied in the temperature range from 303 K to 483 K. Different relations for the estimation of the thermal conductivity are applied. A proposed model for the prediction of the thermal conductivity as a function of temperature is also given. It is observed that the values of the effective thermal conductivity predicted by the proposed model are in agreement with the experimental thermal conductivity data within 9 %.

show abstract

Simultaneous measurements of thermal conductivity and thermal diffusivity of insulators, fluids and conductors using the transient plane source (TPS) technique

Cited by 37 publications

References 4 publications

My journey in physics

My journey in physics

Material Recognition from Heat Transfer given Varying Initial Conditions and Short-Duration Contact

Modeling of Effective Thermal Conductivity of Dunite Rocks as a Function of Temperature

Contact Info

Product

Resources

About