Polymeric structure with embedded fiber Bragg grating sensor manufactured using multi-jet printing method

• Published in: Measurement : journal of the International Measurement Confederation Vol. 166; p. 108229
• Main Authors: Mieloszyk, Magdalena, Andrearczyk, Artur, Majewska, Katarzyna, Jurek, Michal, Ostachowicz, Wieslaw
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 15.12.2020; Elsevier Science Ltd
• Subjects: 3-D printers; Additive manufacturing; Bragg gratings; Embedding; Embedding process; Fibre Bragg grating sensor; Humidity; Jet printing; Multi-jet printing; Photopolymer; Relative humidity; Sensors; Temperature and humidity influence; Terahertz spectroscopy; Test chambers; Terahertz spectroscopy; Multi-jet printing; Temperature and humidity influence; Photopolymer; Embedding process; Fibre Bragg grating sensor
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2020.108229

•MJP application for manufacturing polymeric samples with embedded FBG is presented.•The influence of manufacturing process on FBG sensors (spectra, strain) was analysed.•The quality of the samples using terahertz spectroscopy method was evaluated.•Strain due to temperature and RH for the AM sample material was determined.•Appropriate MJP method for constructing elements with embedded FBG sensor is proposed. Multi-jet printing (MJP) is one of additive manufacturing (AM) techniques. It offers high accuracy of elements and the possibility of manufacturing products with complex shapes. The aim of this study was to determine the possibility of embedding fiber Bragg grating (FBG) sensors into an MJP polymeric structure. The sensors were selected based on their advantages: small size, low weight, lack of calibration requirements, high chemical resistance. The effect of the manufacturing process on the FBG sensors was analyzed during the process. The quality of the manufactured samples was evaluated using terahertz spectroscopy method. The sample quality was also validated during experiments performed in an environmental chamber. It allowed determining the relationships between strain and temperature (10–50 °C) as well as between strain and relative humidity. The obtained results were compared with the numerical ones. It was concluded that the MJP is appropriate for constructing elements with embedded FBG sensors.