دورية أكاديمية
Design and Construction of an LED-Based Excitation Source for Lock-In Thermography
العنوان: | Design and Construction of an LED-Based Excitation Source for Lock-In Thermography |
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المؤلفون: | Patrick Dahlberg, Nils J. Ziegeler, Peter W. Nolte, Stefan Schweizer |
المصدر: | Applied Sciences, Vol 12, Iss 6, p 2940 (2022) |
بيانات النشر: | MDPI AG, 2022. |
سنة النشر: | 2022 |
المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
مصطلحات موضوعية: | lock-in thermography, excitation source, halogen lamp, infrared LED, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
الوصف: | Active thermography is an established technique for non-destructive testing and defect localisation. For external excitation, powerful light sources are commonly used. In addition to a high optical output, a good signal shape and response characteristic as well as control ports, which allow for multiple operation modes, are important for active thermography applications. In this work, the schematics for an excitation source based on infrared LEDs is presented. It features multiple control modes for easy integration into existing measurement setups as well as sophisticated control electronics to realize a wide range of excitation patterns. The phase and amplitude stability of this prototype is investigated and compared to the performance of a modulated halogen lamp as well as a halogen lamp and mechanical chopper combination. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 2076-3417 |
Relation: | https://www.mdpi.com/2076-3417/12/6/2940; https://doaj.org/toc/2076-3417 |
DOI: | 10.3390/app12062940 |
URL الوصول: | https://doaj.org/article/530dc5b95b434a3585c884f1cc7d82d9 |
رقم الأكسشن: | edsdoj.530dc5b95b434a3585c884f1cc7d82d9 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 20763417 |
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DOI: | 10.3390/app12062940 |