Tailored Fiber Placement

Transcription

1 FIBERPRINTER Automated Fiber Placement TM Tailored Fiber Placement Modular design and Additive manufacturing Tailored Fiber Placement Enabling Machine Solutions for Production and R&D LayStitch Technologies Phone: +1 (248) Fristedt@LayStitch.com 1

2 Topics Tailored Fiber Placement (TFP) Subtractive versus Additive Manufacturing Modular Design Blocks with TFP Design Block Evaluation: Hole reinforcement 2

3 Fiber Orientation Load Force - Relative Strength Mechanical properties of a FRP depend on: Fiber type; Matrix; Fiber volume fraction; Fiber Orientation 3

4 Fiber Orientation & Geometry Textiles Textile Technologies Fiber Orientation and Geometry depends on Textile Type Subtractive Manufacturing 4

5 Fiber Orientation & Geometry Tailored Fiber Placement Tailored Fiber Placement Fiber Orientation and Geometry Optimized for Product Properties Additive Manufacturing 5

6 Additive Manufacturing Placing fibers only where needed Eliminating Production Waste 6

7 Modularity Structured Reuse of Solutions Modular TFP Preform design blocks Re-useable design solutions Block Interfaces need to be well defined Benefits of well defined modularity: Faster design phase to a lower cost Lower risk (with known good solution) Improving Productivity, Cost and Quality Accumulation of solutions know-how 7

8 Modularity Creating a Design Block Library Design Block Library Design Block 2 Cad File Interface Information Simulation model Block Documentation Design Block 1 Source: Dan Lennartsson, Sweden 8

9 Modularity Design Blocks Examples 9

10 Modularity Design Blocks More Examples Complex fiber patterns Circles and various reinforcements 180 Turns Sequential lay-ups Mixed Materials formulas 10

11 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Tailored Fiber Placement Technique to Improve Strength of Notched Composite Laminate Ermias G. Koricho (PhD), Anton Khomenko (PhD), Mahmoodul Haq (PhD), Composite Vehicle Research Center Mechanical Engineering Michigan State University, LayStitch Technologies (Highland, Mich.) 11

12 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Drilled hole Molded hole Molded hole Molded hole 12

13 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU S-glass/epoxy composite FliteStrand S ZT Weight of Prepreg 250 (gr/m 2 ) Volatile content (%) <1 Resin Type Fiber placement method Manufacturing method SC/15 LayStitch machine Vacuum Infusion Number of plies 4 Fiber diameter 9 macron Single Tow size 675 TEX (6 tows bundled) (6750 TEX) Stacking sequence (0) 4 (0) 4 Laminate thickness 3.2 mm 13

14 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Unidirectional laminates were manufactured using Vacuum infusion process. Curing cycle: 2 hour at 60 C and under 0.98 bar vacuum pressure; Then followed by 4 hours at 94 C and 0.98 bar vacuum pressure Different techniques were adopted to avoid trapped bubbles around the hole. Teflon was used to keep the desired circular dimension. Teflon rod Infusion process 14

15 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Five specimens were instrumented by strain gages to measure Young s and shear modulus, and Poisson s ratio, according to ASTM Standards During test, external laser extensometer was used to measure the longitudinal displacement Material study using Digital Image Correlation, DIC, and Fiber Bragg measurement techniques (not reported in this slides). 15

16 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU 100% % % % %

17 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU % 38% 86% 93% 20% Drilled hole Molded hole Molded hole Molded hole 17

18 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Tensile test results Type 1 Type 3 Type 2 Type 2 and Type 3 exhibited 36% and 86.14% of the tensile strength of virgin Specimens, respectively. 18

19 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Tensile test results Type 1 Type 4 Type 2 Type 5 19

20 Modularity Hole Reinforcement Composite Vehicle Research Center at MSU Type 1 Type 2 Tangential crack Type 3, 4 Type 5 20

21 Topics Tailored Fiber Placement (TFP) Subtractive versus Additive Manufacturing Modular Design Blocks with TFP Design Block Evaluation: Hole reinforcement 21

22 FIBERPRINTER Automated Fiber Placement TM Tailored Fiber Placement Modular design and Additive manufacturing Tailored Fiber Placement Enabling Machine Solutions for Production and R&D LayStitch Technologies Phone: +1 (248) Fristedt@LayStitch.com 22