An engineering approach for Prepreg characterization
Characterizing prepregs for process-simulation purposes is expensive. The present paper reports on a novel approach for thermoset prepreg characterization. It focusses on determining key-parameters which allow for comparing prepregs from a process-induced distortion (PID) perspective. The approach u...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-03-01
|
| Series: | Composites Part C: Open Access |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666682020300839 |
| _version_ | 1819121285175705600 |
|---|---|
| author | Erik Kappel |
| author_facet | Erik Kappel |
| author_sort | Erik Kappel |
| collection | DOAJ |
| description | Characterizing prepregs for process-simulation purposes is expensive. The present paper reports on a novel approach for thermoset prepreg characterization. It focusses on determining key-parameters which allow for comparing prepregs from a process-induced distortion (PID) perspective. The approach uses conventional thermo-mechanical-analysis (TMA) devices for data generation. It analyzes through-thickness strains along the whole curing process, which are the dominant driver for spring-in distortions. The measured data is utilized in a parameter-fitting scenario, allowing for characterizing compaction, chemical shrinkage and thermal dilation. Aside from magnitudes, the approach also provides information when chemical-shrinkage occurs during the process. The approach is applied here for quasi-isotropic carbon-fiber-epoxy-resin samples made from (QI) 8552/AS4 while selected comparisons with a corresponding M21E/IMA sample are provided for sake of capability demonstration. |
| first_indexed | 2024-12-22T06:34:08Z |
| format | Article |
| id | doaj.art-8f5ab2c566714abbb878d173443b2dca |
| institution | Directory Open Access Journal |
| issn | 2666-6820 |
| language | English |
| last_indexed | 2024-12-22T06:34:08Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Composites Part C: Open Access |
| spelling | doaj.art-8f5ab2c566714abbb878d173443b2dca2022-12-21T18:35:38ZengElsevierComposites Part C: Open Access2666-68202021-03-014100083An engineering approach for Prepreg characterizationErik Kappel0DLR, Institute of Composite Structures and Adaptive Systems, Lilienthalplatz 7, Braunschweig 38108, GermanyCharacterizing prepregs for process-simulation purposes is expensive. The present paper reports on a novel approach for thermoset prepreg characterization. It focusses on determining key-parameters which allow for comparing prepregs from a process-induced distortion (PID) perspective. The approach uses conventional thermo-mechanical-analysis (TMA) devices for data generation. It analyzes through-thickness strains along the whole curing process, which are the dominant driver for spring-in distortions. The measured data is utilized in a parameter-fitting scenario, allowing for characterizing compaction, chemical shrinkage and thermal dilation. Aside from magnitudes, the approach also provides information when chemical-shrinkage occurs during the process. The approach is applied here for quasi-isotropic carbon-fiber-epoxy-resin samples made from (QI) 8552/AS4 while selected comparisons with a corresponding M21E/IMA sample are provided for sake of capability demonstration.http://www.sciencedirect.com/science/article/pii/S2666682020300839Layered structuresPrepreg characterizationCuring-induced shrinkageCTEProcess-induced distortions |
| spellingShingle | Erik Kappel An engineering approach for Prepreg characterization Composites Part C: Open Access Layered structures Prepreg characterization Curing-induced shrinkage CTE Process-induced distortions |
| title | An engineering approach for Prepreg characterization |
| title_full | An engineering approach for Prepreg characterization |
| title_fullStr | An engineering approach for Prepreg characterization |
| title_full_unstemmed | An engineering approach for Prepreg characterization |
| title_short | An engineering approach for Prepreg characterization |
| title_sort | engineering approach for prepreg characterization |
| topic | Layered structures Prepreg characterization Curing-induced shrinkage CTE Process-induced distortions |
| url | http://www.sciencedirect.com/science/article/pii/S2666682020300839 |
| work_keys_str_mv | AT erikkappel anengineeringapproachforprepregcharacterization AT erikkappel engineeringapproachforprepregcharacterization |