1 Introduction
2 Experimental
2.1 Manufacturing the samples
Description | 194 g fabric | 390 g fabric | 600 g fabric | 898 g laying | 1749 g laying |
---|---|---|---|---|---|
Woven type | Fabric | Fabric | Fabric | Laying | Laying |
Fiber type | E-glass | E-glass | S-glass | E-glass | E-glass |
Grammage (g/m2) | 194 | 390 | 600 | 898 | 1749 |
Texture | Twill weave 2/2 | Twill weave 2/2 | Twill weave 2/2 | – | – |
Yarn count (tex) | 68 | 272 | 224 | 2400 (0°) 68 (90°) | 2400 (0°) 68 (90°) |
Filament fineness (µm) | 9 | 13 (weft) 9 (warp) | 8 | 17 (0°) 9 (90°) | 17 (0°) 9 (90°) |
Producer | HP-Textiles | HP-Textiles | AGK | Saertex | Saertex |
2.2 Experimental series
Test series | Glass fiber blank | Number of stacked layers | Holding pressure (bar) |
---|---|---|---|
TS1 | 194 g/m² fabric | 3 | 400 |
TS2 | 390 g/m² fabric | 3 | 400 |
TS3 | 600 g/m² fabric | 3 | 400 |
TS4 | 600 g/m² fabric | 3 | 500 |
TS5 | 600 g/m² fabric | 3 | 600 |
TS6 | 600 g/m² fabric (Every second fiber bundle across the direction of tensile load removed) | 3 | 400 |
TS7 | 898 g/m² laying | 2 | 400 |
TS8 | 1749 g/m² laying | 1 | 400 |
2.3 Determination of the tensile strength
2.4 Analysis of the failure mechanisms
3 Results and evaluation
3.1 Tensile strength depending on the holding pressure during the high pressure die-casting process
3.2 Tensile strength in dependence of the grammage and the type of glass fiber
3.3 Tensile strength of unidirectionally laid structures
3.4 Fracture area analysis using FIB and EDX
3.5 Categorization of the measured tensile strengths
Fiber blank | Number of layers | Tensile strength in N/mm2 (median ± MAD) |
---|---|---|
194 g/m2 fabric | 3 | 301 ± 15 |
390 g/m2 fabric | 3 | 312 ± 6 |
600 g/m2 fabric | 3 | 430 ± 5 |
898 g/m2 UD-laying | 2 | 906 ± 43 |
1749 g/m2 UD-laying | 1 | 951 ± 33 |