Doctoral Dissertations

Date of Award


Degree Type


Degree Name

Doctor of Philosophy


Industrial Engineering

Major Professor

Andrew Yu

Committee Members

Xueping Li, John E Kobza, Reza Abedi


Using risk-based analysis to consider supply chain disruptions and uncertainty along with potential mitigation strategies in the early stages of space industry projects can be used avoid schedule delays, cost overruns, and lead to successful project outcomes.

Space industry projects, especially launch vehicles, are complicated assemblies of high-technology and specialized components. Components are engineered, procured, manufactured, and assembled for specific missions or projects, unlike make-to-stock manufacturing where assemblies are produced at a mass production rate for customers to choose off the shelf or lot, like automobiles.

The supply chain for a space industry project is a large, complicated web where one disruption, especially for sole-sourced components, could ripple through the project causing delays at multiple project milestones. This ripple effect can even cause the delay or cancelation of the entire project unless project managers develop and employ risk mitigations strategies against supply chain disruption and uncertainty. The unpredictability of when delays and disruptions may occur makes managing these projects extremely difficult.

By using risk-based analysis, project managers can better plan for and mitigate supply chain risk and uncertainty for space industry projects to better manage project success.

Space industry project supply chain risk and uncertainty can be evaluated through risk assessments at major project milestones and during the procurement process. Mitigations for identified risks can be evaluated and implemented to better manage project success. One mitigation strategy to supply chain risk and uncertainty is implementing a dual or multi-supplier sourcing procurement strategy.

This research explores using a risk-based analysis to identify where this mitigation strategy can be beneficial for space industry projects and how its implementation affects project success. First a supply chain risk assessment and mitigation decision tool will be used at major project milestones to show where a multi-sourcing strategy may be beneficial. Next, updated supplier quote evaluation tools will confirm the usage of multiple suppliers for procurement. Modeling and simulation are then used to show the impact of that strategy on the project success metrics of cost and schedule.

House of Risk Case Study.xlsx (30 kB)
House of Risk Case Study

Baseline Procurement Process Flow Chart.pdf (51 kB)
Baseline Procurement Process Flow Chart

Dissertation Risk Based Procurement Process Flow Chart.pdf (60 kB)
Dissertation Risk Based Procurement Process Flow Chart

VendorSelectionScoreCard_SingleSupplier.xlsx (294 kB)
Vendor Selection Cssore Card SIngle Supplier

VendorSelectionScoreCard.xlsx (294 kB)
Vendor Selection ScoreCard

Simulation Model Flow.pdf (1806 kB)
Simulation Model Flow

Simulation Model (53 kB)
Simulation Model Files

Simulation Model Analysis (3048 kB)
Simulation Model Analysis Data

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