Oct 22 · Speaking at the OpEx & Business Transformation Summit

Leading with Robustness™

Create value. Improve flow. Engineer dependable performance.

Leading with Robustness™ connects Operational Excellence, Lean Six Sigma, and Design for Six Sigma through one guiding question: Will the value we create hold up under real-world variation?

Operational Excellence aligns improvement with customer needs. Lean Six Sigma strengthens existing processes. Design for Six Sigma builds quality into new ones. Robustness Thinking™ brings them together by reducing the system's sensitivity to change.

Explore the Principles

Principles

Lean removes the fat. Robustness builds the muscle.

Lean helps teams remove work that does not create customer value. Six Sigma helps them understand and reduce variation in process results. Robustness Thinking™ asks how to make a product, process, or organization less sensitive to the variation that remains. Together, they improve performance and help sustain it across different people, inputs, workloads, environments, and time.

01

Start with customer value

What outcome matters, and how will we know we delivered it?

Define quality, delivery, cost, safety, and reliability measures before choosing a tool.

02

Make waste visible

Which steps consume time or resources without improving the outcome?

Map the value flow and remove avoidable waiting, movement, rework, or handoffs.

03

Understand variation

Where and when do results differ, and what drives the difference?

Compare performance across shifts, material lots, equipment, demand levels, and operating conditions.

04

Reduce sensitivity

Which factors can't be fully controlled, and how can the system perform well despite them?

Change a design, operating window, control, or recovery path so a small input change doesn't cause a large performance loss.

05

Prevent mistakes and learn from operation

How will we detect problems early and feed what we learn back into improvement and design?

Combine mistake prevention, meaningful measures, frontline observations, and engineering feedback.

06

Verify performance over time

Does the result hold after the pilot and under real operating conditions?

Review capability, defects, flow, and reliability at agreed intervals, and adjust when conditions change.

Example · Reverse supply chain

Lean reveals repeated handling and waiting between assessment and disposition. Six Sigma shows that cycle time and decision accuracy vary by product type and shift. The team improves the workflow, then asks: will the new process still meet its targets when return volumes surge, product mix changes, or experienced staff are unavailable? Standard decision criteria, flexible capacity, clear escalation, and monitoring help preserve the gain. Removing steps creates efficiency; building capability keeps the process reliable under stress.

An improvement is complete when it creates value in practice and continues to perform as conditions change.

Framework

From customer value to reliable performance

Leading with Robustness™ connects strategy, improvement, and design in one learning cycle. We define the value that matters, study the current system for waste, variation, and gaps, then improve an existing process or design a new solution. We test how it responds to realistic change, and use operating evidence to strengthen it over time.

At every stage, ask: what changes?

Demand and product mix
Materials and supplier quality
Operators, skills, and shifts
Equipment and measurement systems
Environment and time

Which changes cause the greatest loss of value, and what can we change in the system to reduce that loss?

Define value and priorities

What matters to customers and the organization?

Operational Excellence aligns customer needs, strategy, and the improvement portfolio.
Understand the current system

Where do waste, delays, defects, and variation arise?

Value Stream Mapping and Lean Six Sigma establish the baseline and identify causes.
Improve or design

Are we improving an existing process or creating a new solution?

Improve what existsLean Six SigmaDesign something newDFSS
Engineer robustness

What changes in real operation, and how sensitive is performance to it?

Robustness Thinking™ guides variation analysis, experiments, design choices, controls, and mistake prevention.
Measure, learn, and sustain

Does performance hold across conditions and over time?

Operating measures, frontline feedback, and reliability evidence feed the next decision at stage 1.

Programs

Choose the challenge. Build the capability. Deliver a measurable result.

Leading with Robustness™ offers three connected programs. Leaders can align Operational Excellence with business priorities, teams can improve existing processes through Lean Six Sigma, and designers can build quality and reliability into new solutions through DFSS. Every program considers how variation affects performance and concludes with a practical 90-day action plan.

Lead Operational Excellence

Sets priorities and sponsors the pilot

Who it is for

Executives, functional leaders, and transformation sponsors.

The challenge

Many improvement ideas compete for attention, but priorities and ownership are unclear.

What you leave with

A prioritized opportunity portfolio, measures of customer and business value, named owners, and a 90-day pilot plan.

Your 90-day pilot

A priority pilot with a named owner and agreed success measures.

Improve an Existing Process with Lean Six Sigma

Carries out the pilot on an existing process

Who it is for

Operations, quality, supply chain, and process improvement teams.

The challenge

Delays, rework, defects, or inconsistent performance persist in a process already in use.

What you leave with

A current-state value stream map, baseline measures, analysis of waste and variation, and a tested improvement plan.

Your 90-day pilot

A Lean Six Sigma improvement pilot, stress-tested against real variation.

Design for Robustness with DFSS

Carries out the pilot on a new design

Who it is for

Product, process, engineering, and reliability teams.

The challenge

A new design must meet customer requirements across changing conditions and over time.

What you leave with

Critical customer requirements, a variation and risk map, candidate design concepts, and a verification plan.

Your 90-day pilot

A DFSS design pilot, tested across realistic operating conditions.

Pathway

A workshop that leads to action

The Leading with Robustness™ pathway turns learning into a focused 90-day pilot. Your team selects a meaningful challenge, establishes a trustworthy baseline, and chooses the right improvement or design route. We then test performance under the conditions the system will actually face and use the evidence to decide what to adopt, strengthen, or scale.

The workshop produces the charter, measures, route, and test plan.

The next 90 days produce evidence and a decision.

Workshop · days 1–15

Focus

Operational Excellence

Select one problem tied to customer value and a business priority. Name the sponsor, owner, team, scope, and desired result.

Output: a one-page pilot charter.
Days 15–30

Establish the baseline

Lean Six Sigma or DFSS

Map the current value flow or define the new design's requirements. Check that measures and data are usable. Identify likely sources of variation.

Output: a baseline and an initial variation and risk map.
Days 30–45

Choose the route

Lean Six Sigma or DFSS

For an existing process, investigate causes and select a Lean Six Sigma improvement pilot. For a new or redesigned solution, translate customer needs into a DFSS design pilot.

Output: an agreed pilot design, test plan, resources, and decision criteria.
Days 45–75

Pilot and stress-test

Lean Six Sigma or DFSS

Run the improvement or evaluate the design. Test the conditions most likely to affect performance: volume, inputs, operators, equipment, environment.

Output: results against the baseline, including under relevant variation.
Days 75–90

Decide and sustain

Operational Excellence

Review the evidence with the sponsor. Adopt, adjust, expand, or stop. Assign controls, monitoring, and follow-up.

Output: a decision record, sustainment plan, and next-stage roadmap.

Lean Six Sigma route · improve what already exists

A team targets return-processing delays. It maps the current flow, measures cycle time and rework, tests the main causes, and pilots a revised process. Its robustness test: does the gain hold across shifts, product types, and demand peaks?

DFSS route · design for future requirements

A team develops a new inspection process. It defines customer and operational requirements, compares concepts, and tests how sensing accuracy and throughput respond to changes in parts, lighting, equipment, and workload before deployment.

Industries

A different kind of variation in every setting

Engineering

Design for real conditions

Translate customer needs into requirements, test sensitivity to variation, and use operating evidence to strengthen lifecycle reliability.

The challenge

A design meets its target in a controlled test but performs inconsistently across environments, users, or component tolerances.

What we examine

Performance spread, failure rate, reliability over time, recovery behavior, and customer impact.

Manufacturing

Sustain quality and flow

Remove waste, reduce process variation, and build operations that maintain performance across shifts, inputs, equipment conditions, and demand levels.

The challenge

A process meets its target on one line or shift but produces rework, downtime, or inconsistent output elsewhere.

What we examine

First-pass yield, cycle time, rework, downtime, process capability, and cost of poor quality.

Supply chain

Make complex flows more resilient

Reveal delays and rework, improve decisions, and test whether gains hold when volumes, product mix, and capacity change.

The challenge

Returns, repairs, or fulfillment decisions slow down as product mix, volume, or available capacity changes.

What we examine

Turnaround time, throughput, decision accuracy, labor productivity, inventory, and return on investment.

Featured example · Reverse supply chain

Value Stream Mapping identified delays and non-value-added activity. Lean Six Sigma guided process improvement. Digital Twin and AI Agent work supported assessment and decisions, and performance was evaluated against operational and business measures.

Whether the work begins in design, on the factory floor, or across a supply chain, the question is the same: how do we create value that continues to hold under changing conditions?

Book

The thinking behind the practice

Enhancing Life Cycle Reliability

with Robust Engineering and Predictive Health Management

Matthew Hu & Yan-Fu Li

Published by Wiley

Explore how robust design and predictive health management work together to strengthen reliability—from early engineering decisions through a product’s life in the field.

Build reliability into product development.
Design for variation in manufacturing and use.
Connect field insights with health monitoring and prediction.

View the book on Wiley

Experience You Can Count On

RSTI provides consulting and training to organizations seeking to improve their business processes and performance.

Our distinct approach integrates quality and business management systems to help improve your bottom line cost savings and business growth. By focusing on the improvement of processes on both a strategic and tactical level, RSTI enables clients to achieve extraordinary, ongoing financial benefits through increasing customer satisfaction improvement, encouraging value creation and innovation, eliminating waste, improving cycle times, reducing variation, improving quality, and strengthening corporate cultures.

Mission

Helping our customers develop their robust solutions.

Methodologies we use

RSTI Peer Review System

Lean Six Sigma

Design for Six Sigma (DFSS) with Lean Product Creation Principles

TRIZ (Theory of Inventive Problem Solving)

Axiomatic Design

Robust Engineering
Concept Design · Parameter Design · Tolerance Design

Improvement Implementation Approach
Assessment, Strategic Plan, Execution and Transition

ROBUSTNESS
Robustness is a feature in many systems, natural and artificial alike. We investigate robustness from a perspectives of bus system and its application in modern environments. A focus investigates the relevance and importance of robustness in a discipline where many techniques are inspired by problem-solving strategies found in nature—artificial intelligence. The importance of robustness as a ‘principle’ cannot be underestimated. For instance, reliability, availability, safety, and security are important requirements in many systems.

COMPANY POLICIES
Robustness is essential for higher quality, reliability and ultimately customer satisfaction at the lowest cost. The most important thing is to know how to create a robust design and how to turn it into a repeatable long-term process.

EXECUTIVE PROFILES
RSTI service includes a comprehensive consultation of product and service to help identify gaps and opportunities in quality, reliability and safety, a comprehensive report that includes solution proposal, a project plan with timelines and milestones, a cost analysis, and a schedule. We also offer a suite of quality products that will help you get there quickly, efficiently and smoothly. That’s how we ensure your success.

Collaborate

Bring a robustness workshop to your team.

Tell us whether you are improving an existing process, developing a new design, or building an OpEx leadership capability—along with your team, timing, and the challenge you want to address. We can discuss which program fits your organization.

Contact Us

Upcoming

Oct 22, 2026

2:45 pm · Interactive Breakout Session

Orlando, Florida, USA

10th OpEx & Business Transformation Summit

Leveraging Digital Twin, AI Agents, and Agentic AI for Operational Excellence in Reverse Supply Chain

Matthew Hu, Director, Engineering Management Program, Industrial and Systems Engineering, University of Houston. How digital twin, AI agents, and agentic AI can improve reverse supply chain operations while sustaining Operational Excellence.

Register for the summit

Leading with Robustness™