[{"date_updated":"2023-03-15T13:49:38Z","title":"Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs","type":"conference","author":[{"first_name":"Christoph-Alexander","full_name":"Holst, Christoph-Alexander","id":"64782","last_name":"Holst"},{"last_name":"Röckemann","full_name":"Röckemann, Kristian","first_name":"Kristian"},{"last_name":"Steinmetz","id":"55232","full_name":"Steinmetz, Andreas","first_name":"Andreas"},{"orcid":"0000-0002-3325-7887","first_name":"Volker","id":"1804","last_name":"Lohweg","full_name":"Lohweg, Volker"}],"place":"Firenze, Italy","citation":{"ieee":"C.-A. Holst, K. Röckemann, A. Steinmetz, and V. Lohweg, “Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs,” in <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>, 2019.","van":"Holst C-A, Röckemann K, Steinmetz A, Lohweg V. Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs. In: 5th IEEE International Forum on Research and Technologies for Society and Industry. Firenze, Italy; 2019.","ama":"Holst C-A, Röckemann K, Steinmetz A, Lohweg V. Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs. In: <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy; 2019.","din1505-2-1":"<span style=\"font-variant:small-caps;\">Holst, Christoph-Alexander</span> ; <span style=\"font-variant:small-caps;\">Röckemann, Kristian</span> ; <span style=\"font-variant:small-caps;\">Steinmetz, Andreas</span> ; <span style=\"font-variant:small-caps;\">Lohweg, Volker</span>: Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs. In: <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy, 2019","bjps":"<b>Holst C-A <i>et al.</i></b> (2019) Lamb Wave-Based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-Site Aircraft Repairs. <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy.","chicago":"Holst, Christoph-Alexander, Kristian Röckemann, Andreas Steinmetz, and Volker Lohweg. “Lamb Wave-Based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-Site Aircraft Repairs.” In <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy, 2019.","havard":"C.-A. Holst, K. Röckemann, A. Steinmetz, V. Lohweg, Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs, in: 5th IEEE International Forum on Research and Technologies for Society and Industry, Firenze, Italy, 2019.","mla":"Holst, Christoph-Alexander, et al. “Lamb Wave-Based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-Site Aircraft Repairs.” <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>, 2019.","apa":"Holst, C.-A., Röckemann, K., Steinmetz, A., &#38; Lohweg, V. (2019). Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs. In <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy.","short":"C.-A. Holst, K. Röckemann, A. Steinmetz, V. Lohweg, in: 5th IEEE International Forum on Research and Technologies for Society and Industry, Firenze, Italy, 2019.","chicago-de":"Holst, Christoph-Alexander, Kristian Röckemann, Andreas Steinmetz und Volker Lohweg. 2019. Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs. In: <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>. Firenze, Italy.","ufg":"<b>Holst, Christoph-Alexander et. al. (2019)</b>: Lamb wave-based Cure Monitoring of Carbon Fibre Reinforced Polymers for On-site Aircraft Repairs, in: <i>5th IEEE International Forum on Research and Technologies for Society and Industry</i>, Firenze, Italy."},"language":[{"iso":"eng"}],"date_created":"2019-11-22T12:51:16Z","_id":"1995","abstract":[{"lang":"eng","text":"The repair of carbon fibre reinforced polymer structures of aircraft is increasingly conducted on site. Monitoring the curing process of polymers has the potential to decrease repair costs by time optimisation and quality control. In this paper Lamb waves are utilised to determine the degree of cure. Waves are excited and recorded by two piezoelectric transducers, one serving as an actuator and the other as a sensor. The recorded signals are processed with a complex wavelet transform, which allows more accurate feature extraction than calculating features in time domain. Extracted features are the transmitted signal energy of the wave and the resonance frequency of the curing polymer. Waves are excited at different frequencies to identify the current resonance frequency. Excitation at or near the current resonant frequency ensures that curing is monitored with maximum sensitivity."}],"year":2019,"user_id":"74004","department":[{"_id":"DEP5023"}],"status":"public","publication":"5th IEEE International Forum on Research and Technologies for Society and Industry"},{"_id":"2003","abstract":[{"text":"On-site aircraft repairs are gaining in importance due to the susceptibility of carbon fibre reinforced polymers to damage. Repairs themselves are required to be inspected for quality, preferably cost- and time-efficiently. This paper presents an approach for the inspection of repaired composites based on guided Lamb waves. The focus is on cost-effective signal excitation and effective signal processing. Lamb waves are excited with piezoelectric transducers at the resonance frequency of the material under test. Measured signals are processed with a complex wavelet transform to improve damage detection. The proposed approach is evaluated on two test specimens, one of which has a defect in the adhesive bond.","lang":"eng"}],"department":[{"_id":"DEP5023"}],"year":2019,"user_id":"74004","publication":"24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)","status":"public","title":"Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance","date_updated":"2023-03-15T13:49:38Z","author":[{"first_name":"Christoph-Alexander","last_name":"Holst","id":"64782","full_name":"Holst, Christoph-Alexander"},{"first_name":"Kristian","full_name":"Röckemann, Kristian","last_name":"Röckemann"},{"first_name":"Andreas","full_name":"Steinmetz, Andreas","last_name":"Steinmetz","id":"55232"},{"first_name":"Volker","full_name":"Lohweg, Volker","id":"1804","last_name":"Lohweg","orcid":"0000-0002-3325-7887"}],"type":"conference","language":[{"iso":"eng"}],"date_created":"2019-11-22T12:54:24Z","citation":{"ama":"Holst C-A, Röckemann K, Steinmetz A, Lohweg V. Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. In: <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain; 2019.","van":"Holst C-A, Röckemann K, Steinmetz A, Lohweg V. Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. In: 24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019). Zaragoza, Spain; 2019.","ieee":"C.-A. Holst, K. Röckemann, A. Steinmetz, and V. Lohweg, “Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance,” in <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>, 2019.","chicago":"Holst, Christoph-Alexander, Kristian Röckemann, Andreas Steinmetz, and Volker Lohweg. “Lamb Wave-Based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance.” In <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain, 2019.","bjps":"<b>Holst C-A <i>et al.</i></b> (2019) Lamb Wave-Based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain.","din1505-2-1":"<span style=\"font-variant:small-caps;\">Holst, Christoph-Alexander</span> ; <span style=\"font-variant:small-caps;\">Röckemann, Kristian</span> ; <span style=\"font-variant:small-caps;\">Steinmetz, Andreas</span> ; <span style=\"font-variant:small-caps;\">Lohweg, Volker</span>: Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. In: <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain, 2019","havard":"C.-A. Holst, K. Röckemann, A. Steinmetz, V. Lohweg, Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance, in: 24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019), Zaragoza, Spain, 2019.","ufg":"<b>Holst, Christoph-Alexander et. al. (2019)</b>: Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance, in: <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>, Zaragoza, Spain.","chicago-de":"Holst, Christoph-Alexander, Kristian Röckemann, Andreas Steinmetz und Volker Lohweg. 2019. Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. In: <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain.","short":"C.-A. Holst, K. Röckemann, A. Steinmetz, V. Lohweg, in: 24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019), Zaragoza, Spain, 2019.","apa":"Holst, C.-A., Röckemann, K., Steinmetz, A., &#38; Lohweg, V. (2019). Lamb Wave-based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance. In <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>. Zaragoza, Spain.","mla":"Holst, Christoph-Alexander, et al. “Lamb Wave-Based Quality Inspection of Repaired Carbon Fibre Reinforced Polymers for On-Site Aircraft Maintenance.” <i>24nd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA2019)</i>, 2019."},"place":"Zaragoza, Spain"}]