composite repair for field technicians - halldale · pdf filecomposite repair for field...

Composite

Repair for Field

Technicians

Training by Airbus

WATS Conference – 22nd April 2015

Kenneth SCHOEPFLIN

Lead Instructional Designer, Airbus

WATS Conference - Composite repair - Training by Airbus


Composite Repair for Field TechniciansAgenda

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Challenge: Application to Composites



Airbus Composite evolution



Composite Repair Qualifications


Provides guidance to establish aformal training program to qualifyComposite Repair Technicians.

Outlines proper assessment ofindividuals in disciplines of specificknowledge and practical skills.

Advisory Circular 65-33

Aerospace Information Report 5719

Provides key teaching points andtraining objectives.

Defines a checklist for instruction onstandard Practices.


Selecting the proper repair


Sandwich construction or shallow

damage on Monolithic constriction

Non structural

Critical process steps prepare

surface bond

Monolithic construction

Structural

Critical process steps for

drilling trimming and

countersinking


Standard Practices


Composite repair standard practices & rules widely recognized and followed to

ensure reliability and safety

All Manufacturers require Standard Practices for repairs to be

followed

Standard Practices are codified in each OEM Structural Repair

Manual

These Standard Practices are informed by internationally

recognized guidelines to ensure repair quality


Example of standard practices for Bonded Repair


Core Restoration

Drying

Machining

Cleaning & Masking

Inspection

Ensure reliable repair

Required process steps for

composite repair:

Develop awareness to details

Enhance controls

Pro

cess s

tep

s

Resin Mixing

Ply Impregnation & Lay up

Heat Application

Vacuum Bagging

Inspection




Inspection

ARP * 5089, Airbus SRM 51-77-10, NTM

Properly defining the structure and the damage

Post repair inspection

*ARP: Aerospace Recommended Practice

../2014 Tutos/Change icon - bullets colour.mp4





Cleaning & Masking

ARP 4916 Airbus SRM 51-77-11

A clean part is essential for a reliable bond

A water break test verifies a contamination free surface






Machining

AIR* 5367 Airbus SRM 51-27-21

Stepping or Scarfing to achieve a proper

overlap of repair plies to existing material *AIR: Aerospace Information Report






Drying


Not following the proper drying cycle prior to

the curing cycle can explode the part






Core Restoration


Using proper materials for the proper application






Resin Mixing


Calculating correct quantity according to

fabric aerial weight

Respecting ratios, pot life and gel Time






Ply Impregnation & Lay up


Maintaining repair ply architecture and orientation

Properly wetting out the dry fabric






Heat Application


Proper heat management for the cure cycle according to

specific repair and material characteristics






Vacuum Bagging


Specific Materials for Specific Reasons

Leak testing and maintaining correct vacuum pressure

Using the correct protocol for the specific cure






Inspection

ARP 5089, Airbus SRM 51-77-10, NTM

Properly defining the structure and the damage

Post repair inspection


Focus on Monolithic structure


Going beyond

When a Tap Test is not enough

We must know the construction type

Sandwich or Monolithic or Both

We must understand how to

determine skin thickness

We must understand our limitations as

Non-NDT personnel


Focus on Monolithic structure: the A350 XWB





NDT examination decision

Excerpt from

NDT Chapter




Examples of

damages with NDT

investigation


Way forward


Training, Qualifications and Standard practices are

well defined in internationally recognized standards

And fewer still have mobile capabilities to conduct

training at your location

A few competent and professional training

organizations have put it all together. Time tested

standards and OEM SRM


Training by Airbus: focus on Composite Repair


Structure maintenance and repair

SRM familiarization for damage assessment

Basic composite repair for technicians

Advanced composite repair for technicians

Composite repair engineering

Radome repair for technicians

Structure Training by Airbus covers each stage of the

damage assessment and repair workflow

Metallic courses

Composite courses

Our structure courses are available in house or on site Structure training facilities available in Toulouse, Beijing and Mobile



Training by Airbus

Reaching new horizons together



© Airbus S.A.S. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of AIRBUS. No intellectual property rights are granted by the delivery of this document or the disclosure of

its content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS S.A.S. This document and its content shall not be used for any purpose other than that for which it is supplied. The statements

made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supporting grounds for these statements are not shown, AIRBUS S.A.S. will be pleased to explain the basis thereof.

AIRBUS, its logo, A300, A310, A318, A319, A320, A321, A330, A340, A350, A380, A400M are registered trademarks.

composite repair for field technicians - halldale · pdf filecomposite repair for field...

Documents