Course Length: 5 days

Pre Requisites:

R-5 Composite Windblade Repair

Summary:

This 5-day advanced level repair course is a follow-on to our R-5 Composite Wind Blade Repair course. This is for the repair designers, technicians, mechanics, supervisors, and quality assurance personnel directly involved in providing high performance repairs to advanced composite structures. This course will cover more detailed repairs, such as repairs to spars, along with tooling and different repair processes.

Introduction:

This class is devoted to hands-on repair skills. Less time is spent in the classroom and more time is spent in the workshop, allowing the student time to practice different repair scenarios. Students will be given a variety of damaged parts and structures to perform repairs throughout the week. Practice in evaluating the material type and ply orientation of an unknown structure, repairs to spars, fabricating tooling to regain part shape and utilizing other repair processes. In addition, each student-team will be assessing damage to real Wind Blade structures, determining a repair approach, and undertaking the repairs. Over the five-day period, several different parts will be repaired by each team of participants, utilizing different materials and the challenges that come with each new repair scenario. Repairs will be cured using both room temp and elevated temperature cure cycles with different types of hot bonders and hot bonding techniques. Attention will be given to Thermocouple placement and control of the hot bonders. The advantages of each will become familiar to the students as they will have the opportunity to work with several of them individually throughout the week.

Topics:

Key Lecture Topics

  •         Review of composite materials and processes
  •         Materials used for tooling
  •         Repairs to spars / solid laminates
  •         Damage detection and assessment of the damage
  •         Resin infusion process
  •         Various ways to supply heat to the repair

 Workshop Exercises

  •         Each team of students will asses various damages and determine the best way to remove damage and repair part
  •         Each team will perform a repair on a spar
  •         Each team will manufacture a wet lay-up tool in order to reclaim the part surface
  •         Each team will perform a resin infused repair