SIST EN 2557:2001
(Main)Aerospace series - Carbon fibre preimpregnates - Determination of mass per unit area
Aerospace series - Carbon fibre preimpregnates - Determination of mass per unit area
This standard specifies a method for determining the mass per unit area of carbon fibre preimpregnates for aerospace applications.
Luft- und Raumfahrt - Kohlenstoffaser-Prepregs - Bestimmung der flächenbezogenen Masse
Luftfahrt, vorimprägniert, Kohlenstoffaser, Bestimmung, flächenbezogene Masse
Série aérospatiale - Préimprégnés de fibres de carbone - Détermination de la masse surfacique
La présente norme spécifie une méthode de détermination de la masse surfacique des préimprégnés de fibres de carbone pour applications aérospatiales.
Aerospace series - Carbon fibre preimpregnates - Determination of mass per unit area
General Information
Overview
EN 2557:1997 is a CEN aerospace series standard that defines a test method for the determination of mass per unit area of carbon fibre preimpregnates (prepregs) used in aerospace applications. The standard provides a harmonized approach to measuring the surface density of prepreg materials so manufacturers, suppliers and test laboratories can ensure consistent material properties and reliable specification data.
Key Topics
- Scope and applicability: measurement method tailored to carbon fibre preimpregnates for aerospace use.
- Sample preparation and handling: guidance on representative sampling and conditioning to minimise variability.
- Measurement procedure: a standardised technique to obtain the mass per unit area (surface density) of the prepreg.
- Equipment and calibration: requirements for suitable weighing and measuring instruments and their calibration to ensure repeatable results.
- Calculation and reporting: clear instructions on how to calculate surface density and report results for quality records and specifications.
- Traceability and documentation: requirements for recording test conditions, sample identification and test results to support quality assurance.
Applications
EN 2557 is directly relevant to organisations involved in production, inspection and procurement of aerospace composite materials:
- Prepreg manufacturers: to characterise production batches and provide certified material data to customers.
- Aerospace OEMs and Tier suppliers: for incoming material inspection, design verification and specification compliance.
- Composite fabrication shops: to control layup schedules, calculate laminate stacking sequences and manage weight budgets.
- Independent test laboratories and quality control teams: to perform contract testing and maintain traceable records for audits.
- Procurement and material engineers: for comparing supplier datasheets and ensuring consistent supply quality.
Understanding and applying EN 2557 helps control variability in prepreg surface density, which affects laminate thickness, resin distribution, mechanical performance and final component weight-critical factors in aerospace design and manufacture.
Related Standards
While EN 2557 focuses on mass per unit area, complementary standards typically cover:
- resin content and fibre volume fraction measurement
- tack and handling properties of prepregs
- curing cycles and thermal analysis
- mechanical testing of cured composite laminates
Keywords: EN 2557, carbon fibre preimpregnates, mass per unit area, prepreg surface density, aerospace composite test method, determination of mass per unit area, quality control for prepregs.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Carbon fibre preimpregnates - Determination of mass per unit areaLuft- und Raumfahrt - Kohlenstoffaser-Prepregs - Bestimmung der flächenbezogenen MasseSérie aérospatiale - Préimprégnés de fibres de carbone - Détermination de la masse surfaciqueAerospace series - Carbon fi
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Frequently Asked Questions
SIST EN 2557:2001 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Carbon fibre preimpregnates - Determination of mass per unit area". This standard covers: This standard specifies a method for determining the mass per unit area of carbon fibre preimpregnates for aerospace applications.
This standard specifies a method for determining the mass per unit area of carbon fibre preimpregnates for aerospace applications.
SIST EN 2557:2001 is classified under the following ICS (International Classification for Standards) categories: 49.025.40 - Rubber and plastics. The ICS classification helps identify the subject area and facilitates finding related standards.
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