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by Christopher Jackson Leave a Comment

SOR 375 HALT Versus ALT

SOR 375 HALT Versus ALT

HALT Versus ALT

Abstract

Chris and Adam discussing HALT and ALT. What are these? HALT stands for Highly Accelerated Life Testing. ALT stands for Accelerated Life Testing. They sound very similar. But they are not. HALT is a destructive test regime. In fact, a good HALT plan will involve that product failing many times. This is done by subjecting the product to stresses (vibration, thermal cycling et cetera) well beyond actual operating stresses. Some of the failures this creates will not be relevant. That is, they will simply never occur when the product is used ‘normally.’ But many failures are relevant. And by undertaking HALT, we now have a good idea of which failure mechanisms and modes are likely to occur when it is used normally. And this information is incredibly valuable to a design team. ALT on the other hand starts with a failure mechanism you know about. And in a short period of time, you can predict how long that failure mechanism will cause your product to fail when used normally.

Still confused? Well listen to this podcast.

ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: ALT, halt, product development, product testing, reliability

by Kirk Gray 2 Comments

SOR 328 Cables and Connectors and HALT

SOR 328 Cables and Connectors and HALT

Cables and Connectors and HALT

Abstract

Kirk and Fred discussing the benefits and limits of using HALT for finding issues with cables and connectors, and common cause for many failures or intermittent operation in electronic hardware.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 304 Is HALT Just Another Tool in the Tool Bag?

SOR 304 Is HALT Just Another Tool in the Tool Bag?

Is HALT Just Another Tool in the Tool Bag?

Abstract

Kirk and Fred discussing the understanding of HALT and the fact that many see as HALT, the finding of operational limits and weaknesses, as “just another tool in the reliability engineering tool bag” and how for Kirk it is most efficient approach to reliability development.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Fred Schenkelberg Leave a Comment

Fundamentals of HALT

Fundamentals of HALT

An Introduction, Basic Steps, and Examples of How HALT Goes Wrong

The promise of HALT is to find the weaknesses in your design early in the design process. Understanding the basic concepts underlying HALT enable you do so effectively. Let’s talk about this essential discovery tool and how it fits into your program.
[Read more…]

Filed Under: Accendo Reliability Webinar Series, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 177 How do I Determine the Value of HALT?

SOR 177 How do I Determine the Value of HALT?

How do I Determine the Value of HALT?

Abstract

Kirk and Fred discussing how to show management and other skeptics of highly accelerated limit testing how valuable it can be in improving reliability.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray 1 Comment

SOR 163 How many stresses should you add to your HALT

SOR 163 How many stresses should you add to your HALT

SOR 163 How many stresses should you add to your HALT

Abstract

Kirk and Fred discussing the adaptability of a HALT process and what stresses should be included in a HALT evaluation.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 162 Do we have to follow the HALT test plan?

SOR 162 Do we have to follow the HALT test plan?

Do we have to follow the HALT test plan?

Abstract

Kirk and Fred discussing the creation of a HALT plan and how to adapt HALT plans based on what is discovered during the HALT process.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray 1 Comment

SOR 161 HALT Sample Size

SOR 161 HALT Sample Size

HALT Sample Size

Abstract

Kirk and Fred discussing the challenge of getting samples to test during product development. Early prototypes of new products are typically scarce, expensive, and in high demand to many engineering teams to test. HALT testing requires pushing the product to operational limits and discovering what will fail which is scary for management and engineers that do not understand the value of information that is discovered with empirical limit tests.

ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray 2 Comments

SOR 147 How HALT and Degradation ALT Work Together

SOR 147 How HALT and Degradation ALT Work Together

How HALT and Degradation ALT Work Together

Abstract

Kirk, guest John Paschkewitz, and Fred discussing the differences and similarities in mechanical HALT testing of motors and degradation testing for wear out modes. Kirk discusses the use of PHM (Prognostics and Health Management) to measure and provide RUL (Remaining Useful Life) estimates during its application.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 146 More on Mechanical System HALT

SOR 146 More on Mechanical System HALT

More on Mechanical System HALT

Abstract

Kirk, guest John Paschkewitz, and Fred discussing some of the differences from electronics HALT in applications on mechanical components of a system for reliability development.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Adam Bahret Leave a Comment

SOR 080 HAST in Production

SOR 080 HAST in Production

HAST in Production

Abstract

Adam and Fred discuss HAST, HASS, and HASA as products transition from development to manufacturing.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 079 When is it Time to Buy a Chamber

SOR 079 When is it Time to Buy a Chamber

When is it Time to Buy a Chamber

Abstract

Kirk and Fred discuss when and how best to justify the costs to move from using an external lab to perform HALT testing to building an internal HALT lab.

There are many benefits of having a HALT chamber or environmental testing capability, but many of those reasons are not easily quantifiable in dollars.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Kirk Gray Leave a Comment

SOR 078 What to Expect When Contracting a HALT Lab

SOR 078 What to Expect When Contracting a HALT Lab

What to Expect When Contracting a HALT Lab

Abstract

Kirk and Fred discuss what should be considered when choosing to use an external lab to perform HALT evaluations. Distance, costs, measurement instrumentation, lab experience and knowledge of HALT by lab personnel are all part of the considerations deciding what HALT lab to use.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

by Adam Bahret 2 Comments

SOR 049 Vibration Techniques and Tools for HALT

SOR 049 Vibration Techniques and Tools for HALT

Vibration Techniques and Tools for HALT

Abstract

Adam and Kirk discuss the specifics of vibration in HALT and other vibration test methods.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt, Vibration

by Kirk Gray Leave a Comment

SOR 020 What Happens During a HALT Session?

SOR 020 What Happens During a HALT Session?

What Happens During a HALT Session?

Abstract

Kirk and Fred discuss a few of the essential steps as you turn on the HALT stresses.
ᐅ Play Episode

Filed Under: Speaking Of Reliability: Friends Discussing Reliability Engineering Topics | Warranty | Plant Maintenance, The Reliability FM network Tagged with: halt

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