Novel Test Setup for Determination of High Temperature Mechanical Properties of Composites

Transcription

1 Novel Test Setup for Determination of High Temperature Mechanical Properties of Composites 6th International Conference on Composites Testing and Model Identification Aalborg, A. Chripunow 1, M. Ruder 2, A. Kubisch 3 1 WIWeB, 2 HS Regensburg, 3 TH Wildau

2 Introduction of WIWeB is the center of competence of the Bundeswehr for technology, safety and reliability of materials, fuels and lubricants. Munich Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 2 2

3 Introduction of WIWeB Tasks and services and consulting services of WIWeB Materials Structures Tribology Fuels, Lubricants Chemistry, Product Safety, Environmental Protection Surface Technology, Material Protection, Equipment Integrated, interdisciplinary service and advice on the entire life cycle of products and equipment Development Research Testing Admission / Qualification Procurement Terms of Reference Quality assurance Use Application / Education Materials Protection Damage early detection Damage Investigation Disposition / Exploitation Chemical analysis Assessment and identification of options Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 3 3

4 Introduction of WIWeB Research and development priorities of WIWeB Materials, Structures Lightweight materials (CFRP) Operating behaviour / repair of components Materials for armour and grenades Military Materials Protection, Surface Technology Adhesive Tribology, Fuels Understanding of the product behaviour Novel liquids (e.g. electrorheological fluids) Soldiers Equipment Camouflage Wearing comfort Vectors protection Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 4 4

5 Content 1. Introduction 2. Test Setup, Procedure and Materials 3. First Results 4. Summary and Outlook Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 5 5

6 Introduction Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 6 6

7 Introduction Coesfeld Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 7 7

8 Introduction Browne, A model for the structural integrity of composite laminates in fire, PhD Thesis, Newcastle University, 2006 Chowdhury, Eedson, Bisby, Green, Benichou, Mechanical charactrisation of fibre reinforced polymer materials at high temperature, Fire Technology, 2009, 47(4) p , Springer Photo: ZWICK Photo: MAYTEC Cao, Wu, Li, Effects of temperature on tensile strength of carbon fiber and carbon/epoxy composite sheets, Advanced Materials Research, 2012, , p Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 8 8

9 Content 1. Introduction 2. Test Setup, Procedure and Materials 3. First Results 4. Summary and Outlook Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 9 9

10 Experimental Setup Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 10 10

11 Experimental Setup Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 11 11

12 Experimental Setup + heat up of specimen itself (fast, no failure near/within grips) + high temperatures (500 C+) + modular (several loading directions) + extraction of fumes + low cost - no measurement of transverse contraction (yet) Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 12 12

13 Experimental Setup Bending Configuration Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 13 13

14 Experimental Setup Bending Configuration 3-Point-Bending (EN 2562) Apparent Interlaminar Shear Strength (EN 2563) Interlaminar Fracture Toughness Energy Mode II (EN 6034) Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 14 14

15 Experimental Setup Bending Configuration Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 15 15

16 Experimental Setup Bending Configuration Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 16 16

17 Experimental Setup Bending Configuration Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 17 17

18 Experimental Setup Bending Configuration Temperature [ C] Time [s] Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 18 18

19 Experimental Setup Bending Configuration 3-Point-Bending Oven Temperature [ C] Specimen Temperature [ C] Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 19 19

20 Materials Carbon/epoxy prepreg Used in aircrafts (e.g. NH90, TIGER, Eurofighter) Hexcel M18-1/G939: Satin weave (50/50, carbon/carbon) => fabric Hexcel M18-1/G947: Plain weave (97/3, carbon/glass) => UD Matrix: 84% epoxy resin, 16% high temperature resistant thermoplastic component (PEI) Hexcel 8552/IM7: UD Matrix: 83% epoxy resin, 17% high temperature resistant thermoplastic component (PES) T g 210 C 230 C T max(in-service) =135 C Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 20 20

21 Content 1. Introduction 2. Test Setup, Procedure and Materials 3. First Tests and Results 4. Summary and Outlook Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 21 21

22 First Tests and Results Test temperatures: (100 C, 150 C) 200 C, 250 C, 300 C, 350 C, 400 C 7 specimen per layup and temperature Load direction: tension Denotation M18 - Fabric Layup M18 UD Dimensions [mm] Applied Standard Determined Property 0 [(0,90)] 4 [0] 5 250x15x1 DIN EN 2561 E x, R x ±45 [(+45,-45)/ (-45,+45)] 4 [+45/-45] 4 250x25x2 DIN EN ISO R xy 90 [(90,0)] 8 [90] x25x2 DIN EN 2597 E y, R y QI 0 [(0,90)/(+45,-45)/ (-45,+45)/(90,0)] s 250x25x2 DIN EN 2561 E, R Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 22 22

23 Elastic Tensile Strength Strength Tensile Tensile Modulus Shear Modulus Strength Strength [GPa] [MPa] [MPa] [GPa] [MPa] [MPa] First Tests and Results Fabric Tensile Tensile Strength M18-1/G939 0 Tensile Tensile Shear Strength Modulus Strength Modulus Strength M18-1/G939 M18-1/G939 QI Low Temperature Data Data Data Points Points Low Temperature Data 30 High Temperature Data Low Temperature Exponential Exponential Data Fit Fit m High Temperature Data 20 5 High Exponential Temperature FitData ( ) ( ) Exponential Fit T P T = P R + PU PR exp 10 0 Tg Temperature [ C] Temperature Temperature [ C] [ C] Temperature [ C] Low Temperature Data Low Temperature Data High High Temperature Data Data Exponential Fit Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 23 23

24 First Tests and Results Tensile Tensile Shear Strength Modulus Strength M18-1/G947 M18-1/G Tensile Modulus Shear Strength [MPa] [GPa] Tensile Strength [MPa] [MPa] UD Low Temperature Data Low Temperature Data High Temperature Data High Temperature Data Exponential Fit Low Temperature Data Low Temperature Data Low High Temperature Temperature Data Data High High Temperature Exponential Temperature Data Fit Data Exponential Exponential Fit Fit Temperature [ C] Temperature [ C] [ C] Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 24 24

25 Content 1. Introduction 2. Experimental Setup, Procedure and Materials 3. Analytical Models 4. Results 5. Summary and Outlook Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 25 25

26 Summary and Outlook Customised modular test setup, T 500 C Tension and bending configuration Tensile tests (T 400 C) additional tests up to 500 C 3PB and ILSS tests up to 400 C Several UD layups, few MD layups More MD/ QI layups Investigation of 2 pre-preg materials additional UD (8552/IM7) Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 26 26

27 Contact: Dipl.-Ing. André Chripunow Department 210: Mechanical Technology, Simulation Homepage: Determination Novel Test Setup of Temperature-Dependent for Determination of High Mechanical Temperature Properties Mechanical of Aerospace Properties Composites of Composites 27 27