CEN/TC 249/SC 2/WG 5 - Structural properties

2010-09-27 EMA: Track changed according to ISO database: MINOR AMENDMENT!!!

ISO 10618:2004 specifies a method of test for the determination of the tensile strength, tensile modulus of elasticity and strain at maximum load of a resin-impregnated yarn specimen. The method is applicable to yarns (continuous and staple-fibre yarns) of carbon fibre for use as reinforcements in composite materials.

Migrated from Progress Sheet (TC Comment) (2000-07-10): SC2 Res; 2/1998: UAP ballot shall be started ONLY after examination of ISO 7822 ++ is completed. This re-examination has not been completed and the UAP ballot has ++ not been approved by the SC2. SC2 requests the results of the voting not be con- ++ sidered (TA/990317)

Migrated from Progress Sheet (TC Comment) (2000-07-10): Mail from B. Dicker: No record in ISO database for // processing although it ++ corresponds to ISO/CD 11667 (TC61/SC13). ISO 11667 is recently published ++ (December 1997) TA/980205

This International Standard specifies a method for determining the flexural properties of fibre-reinforced plastic composites under three-point (Method A) and four-point (Method B) loading. Standard test specimens are defined but parameters are included for alternative specimen sizes for use where appropriate. A range of testing speeds is included.

This International Standard specifies a procedure for determining the in-plane shear stress-shear strain, shear modulus and shear strength of fibre-reinforced plastic composites by the +/- 45° tension test method. The method is suitable f for use with the following materials: - thermoset and thermoplastic matrix laminates made from unidirectional layers and/or fabrics including unidirectional fabrics, with the fibres oriented at +/- 45° to the specimen axis. the lay-up shall be symmetrical and balanced about the specimen mid-plane.

This international standard specifies a procedure for determining the apparent interlaminar shear strength (ILSS) of fibre-reinforced plastic composites by the beam method. The method is suitable for use with the following materials: - fibre-reinforced thermoset and thermoplastic composites incorporating unidirectional or non-unidirectional reinforcements such as mat, rovings, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcement, sheets made from preimpregnated material (prepreg).

1.1 This International Standard specifies two methods for determining compressive properties, in directions parallel
to the plane of lamination, of fibre-reinforced plastic composites.
1.2 The compressive properties are of interest for specifications and quality-control purposes.
1.3 Two loading methods and two types of specimen are described. They are:
  Method 1: provides shear loading of the specimen (gauge length unsupported).
  Method 2: provides end loading, or mixed loading, of the specimen (gauge length unsupported).
NOTE For tabbed specimens end-loaded using method 2, some load is transferred into the specimen gauge length by
shear through the tabs.
  Type A specimen: rectangular cross-section, fixed thickness, end-tabbed.
  Type B specimen: rectangular cross-section, range of thicknesses, untabbed or end-tabbed (two sizes
available).
Any combination of test method and specimen may be used, provided that the requirements of subclause 9.8 are
satisfied and that the specimen is representative of the material under test. These alternative test conditions will not
necessarily give the same result.
The type A specimen is the preferred specimen for unidirectionally reinforced materials tested in the fibre direction.
For other materials, the type A or B specimen may be used. The type B2 specimen is preferred for mat, fabric and
other multidirectionally reinforced materials.
1.4 The methods are suitable for fibre-reinforced thermoplastic and thermosetting plastic composites.
Unreinforced and particle-filled plastics, as well as those reinforced with short fibres (less than 1 mm in length), are
covered by ISO 604 (see bibliography).
1.5 The methods are performed using specimens which may be machined from a test panel made in accordance
with ISO 1268 or equivalent methods, or from finished or semi-finished products.
1.6 The methods specify required dimensions for the specimen. Tests which are carried out on specimens of other
dimensions, or on specimens which are prepared under different conditions, may produce results which are not
comparable. Other factors, such as the speed of testing, the support fixture used and the condition of the
specimens, can influence the results. Consequently, when comparative data are required, these factors must be
carefully controlled and recorded.
1.7 Fibre-reinforced plastics are usually anisotropic. It is therefore often useful to cut test specimens in at least the
two main directions of anisotropy, or in directions previously specified (for example a lengthwise direction
associated with the production process).

Gives two calcination methods for the determination of the textile-glass and mineral-filler content of glass-reinforced plastics. Method A is used for the determination of the textile-glass content when no mineral fillers are present; method B is used when both components are present. Replaces the first edition.

ISO 527-5:2009 specifies the test conditions for the determination of the tensile properties of unidirectional fibre-reinforced plastic composites, based upon the general principles given in ISO 527-1.
The test method is suitable for all polymer matrix systems reinforced with unidirectional fibres and which meet the requirements, including failure mode, set out in ISO 527-5.
The method is suitable for composites with either thermoplastic or thermosetting matrices, including preimpregnated materials (prepregs). The reinforcements covered include carbon fibres, glass fibres, aramid fibres and other similar fibres. The reinforcement geometries covered include unidirectional (i.e. completely aligned) fibres and rovings and unidirectional fabrics and tapes.
The method is not normally suitable for multidirectional materials composed of several unidirectional layers at different angles (see ISO 527‑4).