11

Autoclave Packing and Scheduling at STELIA

Faculty: Eldon Gunn, P.Eng. Student: Andres Collart (M.A.Sc.)

2

Process at STELIA“There is always a better way” -Thomas Edison

cured in autoclave (big oven)

UNMOLD

carbon fiber airplane parts

3

Pains

•Pain 1: Manually building cure-set• Time consuming• Sub-optimal (but “pretty good”)

•Pain 2: Manually scheduling cure-set• Time consuming• Complex constraints

4

Bin Packing Problem

SchedulingProblem

5

How?

6

Solution

LocalMachine

API C

all

+ fil

es

1. Get Inputs for week. Encode

2. Start Linux and send problem

3. Solve BPP

4. Create MIP problem

5. Start Gurobi+ send problem

API C

all

+pro

blem

6. Solve + send back

Solu

tion

“I’m

don

e”

7. Download solution, decode, display

Solu

tion

Gurobi Cloud Server(AWS)

Linux Server(AWS)

7

Timeline

Solution Built

Project in Industry (PII)

Problem Definition

Proof of Concept

Stakeholder Engagement

Refining of Problem

Masters

Implementation

8

Benefits

Long term capacity planning

DecreasedPower

Consumption

Decreased Peak Power

Increased Schedule Flexibility

Decreased WeekendOvertime