Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences
We present an optical sensing methodology to estimate the fatigue damage state of structures made of carbon fiber reinforced polymer (CFRP), by measuring variations on the surface roughness. Variable amplitude loads (VAL), which represent realistic loads during aeronautical missions of fighter aircr...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/15/3/5710 |
| _version_ | 1811184746379608064 |
|---|---|
| author | Pablo Zuluaga-Ramírez Álvaro Arconada Malte Frövel Tomás Belenguer Félix Salazar |
| author_facet | Pablo Zuluaga-Ramírez Álvaro Arconada Malte Frövel Tomás Belenguer Félix Salazar |
| author_sort | Pablo Zuluaga-Ramírez |
| collection | DOAJ |
| description | We present an optical sensing methodology to estimate the fatigue damage state of structures made of carbon fiber reinforced polymer (CFRP), by measuring variations on the surface roughness. Variable amplitude loads (VAL), which represent realistic loads during aeronautical missions of fighter aircraft (FALSTAFF) have been applied to coupons until failure. Stiffness degradation and surface roughness variations have been measured during the life of the coupons obtaining a Pearson correlation of 0.75 between both variables. The data were compared with a previous study for Constant Amplitude Load (CAL) obtaining similar results. Conclusions suggest that the surface roughness measured in strategic zones is a useful technique for structural health monitoring of CFRP structures, and that it is independent of the type of load applied. Surface roughness can be measured in the field by optical techniques such as speckle, confocal perfilometers and interferometry, among others. |
| first_indexed | 2024-04-11T13:17:39Z |
| format | Article |
| id | doaj.art-fe49fd56e3b64815b79e1f456f3784e1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:17:39Z |
| publishDate | 2015-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-fe49fd56e3b64815b79e1f456f3784e12022-12-22T04:22:20ZengMDPI AGSensors1424-82202015-03-011535710572110.3390/s150305710s150305710Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load SequencesPablo Zuluaga-Ramírez0Álvaro Arconada1Malte Frövel2Tomás Belenguer3Félix Salazar4Instituto Nacional de Técnica Aeroespacial (INTA), Carretera de Ajalvir Km 4, 28850 Torrejón de Ardoz, SpainDepartment of Applied Physics, ETSI Minas, Universidad Politécnica de Madrid, C/Ríos Rosas 21, 28003 Madrid, SpainInstituto Nacional de Técnica Aeroespacial (INTA), Carretera de Ajalvir Km 4, 28850 Torrejón de Ardoz, SpainInstituto Nacional de Técnica Aeroespacial (INTA), Carretera de Ajalvir Km 4, 28850 Torrejón de Ardoz, SpainDepartment of Applied Physics, ETSI Minas, Universidad Politécnica de Madrid, C/Ríos Rosas 21, 28003 Madrid, SpainWe present an optical sensing methodology to estimate the fatigue damage state of structures made of carbon fiber reinforced polymer (CFRP), by measuring variations on the surface roughness. Variable amplitude loads (VAL), which represent realistic loads during aeronautical missions of fighter aircraft (FALSTAFF) have been applied to coupons until failure. Stiffness degradation and surface roughness variations have been measured during the life of the coupons obtaining a Pearson correlation of 0.75 between both variables. The data were compared with a previous study for Constant Amplitude Load (CAL) obtaining similar results. Conclusions suggest that the surface roughness measured in strategic zones is a useful technique for structural health monitoring of CFRP structures, and that it is independent of the type of load applied. Surface roughness can be measured in the field by optical techniques such as speckle, confocal perfilometers and interferometry, among others.http://www.mdpi.com/1424-8220/15/3/5710composite structuressurface roughnessfatigue damagevariable amplitude loadsoptical inspection |
| spellingShingle | Pablo Zuluaga-Ramírez Álvaro Arconada Malte Frövel Tomás Belenguer Félix Salazar Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences Sensors composite structures surface roughness fatigue damage variable amplitude loads optical inspection |
| title | Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences |
| title_full | Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences |
| title_fullStr | Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences |
| title_full_unstemmed | Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences |
| title_short | Optical Sensing of the Fatigue Damage State of CFRP under Realistic Aeronautical Load Sequences |
| title_sort | optical sensing of the fatigue damage state of cfrp under realistic aeronautical load sequences |
| topic | composite structures surface roughness fatigue damage variable amplitude loads optical inspection |
| url | http://www.mdpi.com/1424-8220/15/3/5710 |
| work_keys_str_mv | AT pablozuluagaramirez opticalsensingofthefatiguedamagestateofcfrpunderrealisticaeronauticalloadsequences AT alvaroarconada opticalsensingofthefatiguedamagestateofcfrpunderrealisticaeronauticalloadsequences AT maltefrovel opticalsensingofthefatiguedamagestateofcfrpunderrealisticaeronauticalloadsequences AT tomasbelenguer opticalsensingofthefatiguedamagestateofcfrpunderrealisticaeronauticalloadsequences AT felixsalazar opticalsensingofthefatiguedamagestateofcfrpunderrealisticaeronauticalloadsequences |