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Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.

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Development of Ultrasonic Transducers Based on PZT Piezoelectric Thin Films

Shicheng Zhao¹, Qiaozhen Zhang¹, Xiangyong Zhao²
¹School of Information and Mechanical and Electrical Engineering, Shanghai Normal University
²College of Mathematics and Physics, Shanghai Normal University

As the ultrasonic sensor industry evolves towards lower costs, miniaturization, higher integration, and superior performance, Microelectromechanical Systems (MEMS)-based ultrasonic transducers have emerged as a prominent trend. This article introduces a Piezoelectric Micromachined ... Read More

Eddy current thermography feasibility study using COMSOL Multiphysics

N. Paudel¹, A. Spann¹, Z. Ouyang²
¹Veryst Engineering, 47A Kearney Rd, Needham, MA 02494
²Pratt & Whitney, 400 Main Street, East Hartford, CT 06118

Eddy current thermography (ECT) is a non-destructive contact-free method of defect detection in a conductive material combining the electromagnetic induction of eddy currents and thermal imaging. This technique uses an excitation system consisting of an inductor with coil(s) carrying ... Read More

Acoustic Wave Crack Detection: A First Principles Approach

R. W. Pryor [1],
[1] Pryor Knowledge Systems, Inc., Bloomfield Hills, MI, USA

Crack detection is and has been an active field of exploration, both theoretical and applied for a number of years. It is the belief of this author that the concepts presented herein explore a new methodology for the modeling and the detection of cracks and families of cracks in ... Read More

A Novel Wavelength Detection Method Based on Wavelength Absorption in Silicon

K. Zhang [1], Y. Audet [1],
[1] École Polytechnique de Montréal, Montréal, QC, Canada

A new filter-less method of detecting the spectrum based on wavelength absorption in silicon is proposed. Wavelength dependent absorption coefficient produces a unique excess carrier distribution. Thus the wavelength spectral information can be obtained by measuring the photon generated ... Read More

Numerical Study on the Mechanism of Interface Debonding Detection for CFST with PZT

H. Chen [1], J. Li [1], S. Xia [2],
[1] Hunan University, Changsha, Hunan, China
[2] Xi'an Jiaotong University, Xi'an, Shaanxi, China

Introduction In order to understand the detection mechanism of the PZT based nondestructive testing (NDT) technology for interface debonding of CFSTs, numerical simulation on a multi-physical model composed of surface-mounted PZT patches and CFST structural member is established in ... Read More

Physics-Based Modeling of Lithium Plating on Graphite Anode of Commercial Lithium-Ion Batteries

Sina Navidi¹, Benjamin Nowacki¹, Aidan Lawlor¹, Jun Xu ², Chao Hu¹
¹School of Mechanical, Aerospace, and Manufacturing Engineering, University of Connecticut, Storrs, CT, USA
²Department of Mechanical Engineering, University of Delaware, Newark, DE, USA

Lithium plating on the graphite anode is a significant factor contributing to the degradation of cell capacity, initiation of internal short circuits, and escalation of thermal runaway in lithium-ion batteries. Non-intrusive detection methods for lithium plating are critical for the safe ... Read More

Remote Sensing of Electromagnetically Penetrable Objects: Landmine and IED Detection

R. Eze [1], G. Sivulka [2], ,
[1] City University of New York - LaGuardia Community College, Long Island City, NY, USA
[2] Regis High School, New York, NY, USA

The detection, characterization, and classification of underground environmental hazardous objects [mines, IEDs, and other unexploded military hardware] is a worldwide problem that needs urgent attention and solution. While electromagnetic sensor technologies have been applied to ... Read More

Investigation on MEMS Based Thermal Sensor for Cancer Detection

A. V. Lakshmi[1], K. C. Devi[1]
[1]PSG College of Technology, Coimbatore, Tamil Nadu, India

This paper presents the design and simulation of a thermal sensor using COMSOL Multiphysics® software for the detection of low body temperature syndrome which can allow the early detection of cancer. This sensor is made of an alloy consisting of two materials with different coefficients ... Read More

Quench Propagation and Detection in a YBCO Racetrack

G. Escamez[1], C. Lorin[1], T. Wu[1], P. J. Masson[1]
[1]University of Houston, Houston, TX, USA

High temperature superconductors (HTS) such as YBCO coated conductors show great promise for future applications where high magnetic fields are needed. The superconducting state only exists under a critical surface defined in the (J,T,B) space. Quench is the process by which a current ... Read More

Cancer Detection Using Coagulation Therapy with Coaxial Antenna

S. M. Ali[1], A. K. Jha[1], S. Mahapatra[1], M. Panigrahi[1]
[1]Trident Academy of Technology, Bhubaneswar, Odisha, India

Nearly seven lakh Indians die of cancer, while over 10 lakh are newly diagnosed with some form of the disease every year. Surgical resection is not always feasible in patients with hepatocellular carcinoma. Microwave Coagulation Therapy (MCT) has been used as an alternative to resection ... Read More

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