OS-C501

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Offshore Standard DNV-OS-C501, November 2013 App.F Example for representative data - Glass reinforced polyester laminate – Page 230 F.1 General F.1.1 APPENDIX F EXAMPLE FOR REPRESENTATIVE DATA - GLASS REINFORCED POLYESTER LAMINATE F.1.1.1 This appendix describes an example of a fairly complete set of data for a glass reinforced polyester laminate. F.1.1.2 Many glass reinforced materials will be similar to this example and can be qualified according to Sec.4 [8.6] - Qualification against representative data. The fibre dominated properties should be applicable to most E-glass reinforced laminates, matrix dominated properties may change considerably when changing the resin system. F.1.1.3 The fibre dominated fatigue properties in [F.4.2] can be used for all E-glass laminates as long as some fibres are oriented in the load direction. F.1.1.4 Representative data for other materials can be measured and used like this example, as long as the requirements given in Sec.4 [8.5] and [8.6] are fulfilled. F.1.1.5 There is a lack of data for matrix dominated properties and of properties in water. Properties in other fluids are not listed, since only few and specific data exist. If such properties are needed some qualification testing may be required. F.2 Definition of material The material is described according to Sec.4 [8.5.2]. Table F-1 Properties to define the material Constituent materials: Requirements to group measurements from different laminates Generic Fibre type E-Glass Bundle type - Fibre trade name - Type of weave Stitch bonded straight parallel fibres Type of sizing Polyester compatible Fibre Manufacturer All Weaver All Fabric trade name and batch number All Generic resin type (e.g. epoxy, polyester) Polyester Specific resin type (trade name, batch number) General Catalyst (trade name and batch number) General Accelerator (trade name and batch number) General Fillers (trade name and batch number) None Additives (trade name and batch number) None Process parameters: Laminator (company) not relevant Processing method hand lay-up Processing temperature Room temperature (about 20 o C) Processing pressure None Process atmosphere (e.g. vacuum) Atmospheric pressure Post curing (temperature and time) None Control of fibre orientation ±2 o Fibre volume fraction 35% Void content Less than 2% Conditioning parameters: See sections for properties: DET NORSKE VERITAS AS
Offshore Standard DNV-OS-C501, November 2013 App.F Example for representative data - Glass reinforced polyester laminate – Page 231 F.3 Quasi static properties in air (QSA) F.3.1 Test environment F.3.1.1 The test environment is described according to Sec.4 [8.5.2]. Table F-2 Conditioning parameters Conditioning parameters: Temperature Water content of the laminate (wet, dry) Chemical environment Loading rate 18 o C Dry Air about 1% per minute Number of specimens F.3.1.2 The following properties are listed according to Sec.4 [2.2]. Characteristic values are calculated according to Sec.4 [2.4]. F.3.1.3 Most data are based on 30 measurements, some are based on more. F.3.2 Fibre dominated ply properties Reported individually for all properties Table F-3 Fibre dominated ply properties Parameter Value Unit Explanation E 1 (UD ply) Mean 26.7 [GPa] Modulus of elasticity in main fibre COV 5% direction Charact. value as mean Mean 0.023 Strain Tensioning strain at break in the main COV 5% fibre direction Charact. value 0.020 Fibre dominated properties ε ∧ 1t 1c ε ∧ σ ∧ 1t σ ∧ 1c Mean 0.016 Strain Compressive strain at break in the main COV 5% fibre direction Charact. value 0.014 Mean 614 N/mm 2 (MPa) Tension stress at break in the main fibre COV 5% direction Charact. value 534 Mean 427 N/mm 2 (MPa) Compressive stress at break in the main COV 5% fibre direction Charact. value 373 DET NORSKE VERITAS AS
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OS-C501

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