We’ve assembled this library to help you get a handle on reliability testing, field monitoring and anything else we feel helps to build a foundation of knowledge. Feel free to download each PDF and study it offline.
Written by Dave Rahe of DLi. labs & Qualmark’s Senior Application Engineerings, this paper outlines the first HALT & HASS Standard of its kind – IPC 9592A : Requirements for Power Conversion Devices for the Computer and Telecommunications Industries. The History of IPC and IPC 9592A In 1957, the... More »
The Calculation of gRMS, by Neil Doertenbach, from Qualmark Corporation describes the process of calculating gRMS values when using a repetitive shock table used in Qualmark’s line of HALT chambers. gRMS is typically used to specify and compare the energy in repetitive shock vibration systems. Introduction What is gRMS?
HALT & HASS Technical Paper – COTS Journal September 2005 :: Ralph Poplawsky, Chief Technology Officer, QualMark Corporation. A lack of standards for the correct implementation of the stress test techniques known as HALT and HASS has resulted in widespread confusion. When implemented correctly, HALT and HASS provide a fast, cost-effective path to... More »
This field study evaluated a newer and older dozer at a construction site. Both dozers performed similar activities in the same location within the construction site. Two operators participated in this study. One operator used the older equipment and the other operator used the newer equipment. Jolting and... More »
This study builds upon the work conducted during the original MADE study in America. “The concept was to ship instrumented packages via express carriers from various origins to various destinations in Europe. Acceleration, temperature, and humidity were recorded and used to calculate/interpret velocity change, drop height, impact orientation,... More »
In preparation for Pack Expo International 2006 Lansmont chose the famed Chicago Elevated (“L”) Rail Lines to help demonstrate newly available Lansmont technology that can be used to measure, compare and quantify the level of hazard or harshness present within transport environments. Abstract Chicago L Train Ride Quality... More »
An extremely thorough study conducted across America in order to study the transport environment. The Measurement and Analysis of the Distribution Environment (MADE) task group was established under P2C2 (Protective Packaging of Computer Components), a subcommittee of the Institute of Packaging Professionals (IoPP). The group’s mission is to... More »
Two recorders are compared, the SAVER from Lansmont, and the EDR3 from Instrumented Sensor Technology (IST). Both are similar in size and weight, and both use internal triaxial accelerometers. The SAVER (“Unit A”) uses piezoelectric accelerometers, and the EDR3 (“Unit B”) uses piezoresistive accelerometers. Both recorders use the... More »
Presented at Dimensions 07 by Amgen Incorporation California. The industry currently has no set standards on the way vibration data is collected and analyzed to develop vibration profiles. This presentation will describe how to develop random vibration profiles to meet your qualification needs. The presentation will also outline... More »
Written by the United Test & Assembly Center Ltd (UTAC) in Singapore this paper explores the reliability of Lead versus Lead free soldered IC’s during drop testing. Abstract Drop Impact Reliability Testing for Lead-Free and Leaded Soldered IC Packages
HALT is an effective tool used during product development to stimulate design weaknesses into failure modes, where they can be diagnosed, and corrected before the product is introduced to mass manufacturing. In addition, HALT will identify the weakest points in a system or product that requires ‘ruggedizing’ to... More »
Highly Accelerated Stress Screening (HASS) is the ideal tool for both qualifying product changes, and monitoring the reliability throughout a products life. Engineering was fraught with poor quality components in the early days, but this is no longer the case, and therefore traditional production screens that originally identified... More »
This paper analyzes HALT & HASS data from 33 different companies from a variety of different industries and illustrates that HALT can be applied to a very wide range of products, including both electrical and electro mechanical. Written by Mike Silverman. Abstract Accelerated reliability testing is one of... More »
The decision whether or not to perform AST on a specific product is a typical example of the quality vs. cost problem which many companies struggle. Unfortunately, reliability data is never available until several months or even elapsed, if at all. This paper will examine the economics of... More »
The purpose of this paper is to communicate the numerous successes that have resulted from HALT, HASS, and other environmental testing used by IBM’s Web Server division in Beaverton, Oregon. Written by Anthony T. McCray of IBM. Abstract The purpose of this paper is to communicate the numerous... More »
This brief paper is a condensation of the methods taught by the author and inventor of the methods in the seminar HALT and HASS. This paper is not intended to be complete, but to be an introduction to the concepts and to allow one to determine if the seminar... More »
This paper focuses on the ability to locate, isolate, and diagnose faults in the firmware and software of networking equipment. Provides specific examples of failures found at Allied Telesyn during HALT in the development phase. Written by D.Johnson & K.Franks. Abstract The establishment of Allied Telesyn’s Highly Accelerated... More »
Looking for a test standard? Check out our list of linked standards from the ASTM, ISO, ISTA, JEDEC and more.