Thermal Imaging Product Power-up: Metrology for Capturing Thermal Defects on Live Units Not Visible on Any Other Technique

2005 ◽  
Author(s):  
Nova T. Zamora ◽  
Kam Meng Chong ◽  
Ashish Gupta
Keyword(s):  
Thermal Imaging ◽  
Thermal Response ◽  
Recent Application ◽  
Ir Camera ◽  
Thermal Failure ◽  
Response Data ◽  
Startup Process ◽  
Customer Returns ◽  
Actual Computer ◽  
Detection Of Defects

Abstract This paper presented the recent application of die powerup in Thermal Imaging as applied to the detection of defects causing thermal failure on revenue products or units not being captured using other available techniques. Simulating the condition on an actual computer setup, the infrared (IR) camera should capture images simultaneously as the entire bootup process is being executed by the processor, thus revealing a series of images and thermal information on each and every step of the startup process. This metrology gives the failure analyst a better approach to acquire a set of information that substantiate in the conduct of rootcause analysis of thermal-related failure in revenue units, especially on customer returns. Defective units were intentionally engineered in order to collect the thermal response data and eventually come up with a plot of all known thermal-related defects.

Evaluation of Package Defects by Thermal Imaging Techniques

2002 ◽  
Author(s):  
Yongmei Liu ◽  
Rajen Dias
Keyword(s):  
Infrared Thermography ◽  
Thermal Imaging ◽  
High Speed ◽  
Imaging Techniques ◽  
Thermal Response ◽  
Analysis Tool ◽  
Nondestructive Analysis ◽  
Ir Camera ◽  
External Heating

Abstract Study presented here has shown that Infrared thermography has the potential to be a nondestructive analysis tool for evaluating package sublayer defects. Thermal imaging is achieved by applying pulsed external heating to the package surface and monitoring the surface thermal response as a function of time with a high-speed IR camera. Since the thermal response of the surface is affected by the defects such as voids and delamination below the package surface, the technique can be used to assist package defects detection and analysis.

scholarly journals Temperature measurement methods in an experimental setup during bone drilling: A brief review on the comparison of thermocouple and infrared thermography

2021 ◽  
Vol 2129 (1) ◽  
pp. 012096
Author(s):  
Md Ashequl Islam ◽  
Nur Saifullah Kamarrudin ◽  
Ruslizam Daud ◽  
Ishak Ibrahim ◽  
Anas Rahman ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Thermal Response ◽  
Drilling Process ◽  
Temperature Elevation ◽  
Bone Drilling ◽  
Ir Camera ◽  
Non Invasive ◽  
Dental Implantation ◽  
Invasive Method ◽  
Significant Opportunity

Abstract Predicting thermal response in orthopedic surgery or dental implantation remains a significant challenge. This study aims to find an effective approach for measuring temperature elevation during a bone drilling experiment by analyzing the existing methods. Traditionally thermocouple has frequently been used to predict the bone temperature in the drilling process. However, several experimental studies demonstrate that the invasive method using thermocouple is impractical in medical conditions and preferred the thermal infrared (IR) camera as a non-invasive method. This work proposes a simplified experimental model that uses the thermocouple to determine temperature rise coupled with the thermal image source approach. Furthermore, our new method provides a significant opportunity to calibrate the thermal IR camera by finding out the undetected heat elevation in a workpiece depth.

Damage Observation of Glass Fiber/Epoxy Composites Using Thermography and Supported by Acoustic Emission

2014 ◽  
Vol 627 ◽  
pp. 187-190 ◽  
Author(s):  
Jefri Bale ◽  
Emmanuel Valot ◽  
Martine Monin ◽  
Peggy Laloue ◽  
Olivier Polit ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Glass Fiber ◽  
Epoxy Composite ◽  
Thermal Response ◽  
Tensile Loading ◽  
Destructive Testing ◽  
Ir Camera ◽  
Damage Propagation ◽  
Static Tensile Loading ◽  
Static Tensile

This work presents an experimental study to monitor the damage propagation of composite material by non destructive testing (NDT) method. In order to achieve this, an open hole condition of glass fiber/epoxy composite has been used as the specimen test under static tensile loading and observed using two different real-time monitoring techniques of NDT namely infra-red (IR) camera and supported by Acoustic Emission. The results show that the thermal response and acoustic emission signals give a good detection on damage appearance and damage propagation of glass fiber/epoxy composite under static tensile loading conditions.

scholarly journals Refinement and validation of infrared thermal imaging (IRT): a non-invasive technique to measure disease activity in a mouse model of rheumatoid arthritis

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Zeynab Nosrati ◽  
Marta Bergamo ◽  
Cristina Rodríguez-Rodríguez ◽  
Katayoun Saatchi ◽  
Urs O. Häfeli
Keyword(s):  
Rheumatoid Arthritis ◽  
Mouse Model ◽  
Disease Activity ◽  
Thermal Imaging ◽  
High Throughput Screening ◽  
Invasive Technique ◽  
Computer Assisted ◽  
Infrared Thermal Imaging ◽  
Ir Camera ◽  
Temperature Changes

Abstract Background The discovery and development of new medicines requires high-throughput screening of possible therapeutics in a specific model of the disease. Infrared thermal imaging (IRT) is a modern assessment method with extensive clinical and preclinical applications. Employing IRT in longitudinal preclinical setting to monitor arthritis onset, disease activity and therapeutic efficacies requires a standardized framework to provide reproducible quantitative data as a precondition for clinical studies. Methods Here, we established the accuracy and reliability of an inexpensive smartphone connected infrared (IR) camera against known temperature objects as well as certified blackbody calibration equipment. An easy to use protocol incorporating contactless image acquisition and computer-assisted data analysis was developed to detect disease-related temperature changes in a collagen-induced arthritis (CIA) mouse model and validated by comparison with two conventional methods, clinical arthritis scoring and paw thickness measurement. We implemented IRT to demonstrate the beneficial therapeutic effect of nanoparticle drug delivery versus free methotrexate (MTX) in vivo. Results The calibrations revealed high accuracy and reliability of the IR camera for detecting temperature changes in the rheumatoid arthritis animal model. Significant positive correlation was found between temperature changes and paw thickness measurements as the disease progressed. IRT was found to be superior over the conventional techniques specially at early arthritis onset, when it is difficult to observe subclinical signs and measure structural changes. Conclusion IRT proved to be a valid and unbiased method to detect temperature changes and quantify the degree of inflammation in a rapid and reproducible manner in longitudinal preclinical drug efficacy studies.

Laser-induced thermal response and characterization of nanoparticles for cancer treatment using magnetic resonance thermal imaging

2007 ◽  
Vol 34 (7) ◽  
pp. 3102-3108 ◽  
Author(s):  
Andrew M. Elliott ◽  
R. Jason Stafford ◽  
Jon Schwartz ◽  
James Wang ◽  
Anil M. Shetty ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Cancer Treatment ◽  
Thermal Imaging ◽  
Thermal Response

Transient Thermal Response of Skin Tissue

2008 ◽  
Author(s):  
Muge Pirtini Cetingul ◽  
Cila Herman
Keyword(s):  
Temperature Distribution ◽  
Surface Temperature ◽  
Thermal Imaging ◽  
Imaging Techniques ◽  
Thermal Response ◽  
Sensitivity Study ◽  
Subsurface Structures ◽  
Surface Temperature Distribution ◽  
Transient Thermal ◽  
Transient Thermal Response

The increased availability of thermal imaging cameras has led to a growing interest in the application of infrared imaging techniques to the detection and identification of subsurface structures. These imaging techniques are based on the following principle: when a surface is heated or cooled, variations in the thermal properties of a structure located underneath the surface result in identifiable temperature contours on it. These contours are characteristic of the structure’s shape, depth, and its thermal properties. We study the use of the transient thermal response of skin layers to determine to which extent the surface temperature distribution reflects the properties of subsurface structures, such as lesions. A numerical model using the finite element method is described to obtain this response and key results are reported in the paper. A sensitivity study is conducted first to better understand the thermal response of the system and the role of various system and model parameters. We explore the extent to which we are able to draw conclusions regarding the size, depth and nature of subsurface structures and accuracy of these conclusions based on the surface temperature response alone. This work validates the idea of examining the transient thermal response and using thermal imaging as a solution for lesion identification. A sensitivity study of surface temperature distribution to variations of thermophysical properties, blood perfusion rate, and thicknesses of skin layers is performed. It is observed that variations in these parameters have little impact on the surface temperature distribution. The work reported in the paper is a portion of a comprehensive research effort involving experiments on a phantom model as well as measurements on patients. Future work will focus on comparing the results of our 2D numerical modeling efforts with the experimental results using a skin tissue-mimicking phantom. Knowledge gained from the modeling and experimental efforts will be utilized in characterizing lesions in patient studies. The focus of this paper is the computational sensitivity analysis.

A new screening method for osmotic component of salinity tolerance in cereals using infrared thermography

2009 ◽  
Vol 36 (11) ◽  
pp. 970 ◽  
Author(s):  
Xavier R. R. Sirault ◽  
Richard A. James ◽  
Robert T. Furbank
Keyword(s):  
Osmotic Stress ◽  
Thermal Imaging ◽  
Screening Method ◽  
Leaf Temperature ◽  
Automated Image Analysis ◽  
Curvilinear Relationship ◽  
Physiological Status ◽  
Imaging Protocol ◽  
Ir Camera ◽  
Osmotic Stress Tolerance

A high-throughput, automated image analysis protocol for the capture, identification and analysis of thermal images acquired with a long-wave infrared (IR) camera was developed to quantify the osmotic stress response of wheat and barley to salinity. There was a strong curvilinear relationship between direct measurements of stomatal conductance and leaf temperature of barley grown in a range of salt concentrations. This indicated that thermography accurately reflected the physiological status of salt-stressed barley seedlings. Leaf temperature differences between barley grown at 200 mM NaCl and 0 mM NaCl reached 1.6°C – the sensitivity of the IR signal increasing at higher salt concentrations. Seventeen durum wheat genotypes and one barley genotype, known to vary for osmotic stress tolerance, were grown in control (no salt) and 150 mM NaCl treatments to validate the newly-developed automated thermal imaging protocol. The ranking of the 18 genotypes based on both a growth study and the IR measurements was consistent with previous reports in the literature for these genotypes. This study shows the potential of IR thermal imaging for the screening of large numbers of genotypes varying for stomatal traits, specifically those related to salt tolerance.

Sign in / Sign up

Export Citation Format

Share Document