Technical Articles

ESPEC North America Inc | Qualmark Products and Services has published these technical articles:

(Calibration and Testing Services)
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Since the introduction of HALT and HASS testing in the late 1980s, technologies employed in product design have changed dramatically....
(Calibration and Testing Services)
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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....
(Calibration and Testing Services)
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IPC-9592A: Requirements or Power Conversion Devices for the Computer and Telecommunications Industries...
(Calibration and Testing Services)
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In recent years, the test techniques known as HALT (Highly Accelerated Life Testing) and HASS (Highly Accelerated Stress Screening) have been gaining advocates and practitioners. These test methods,...
(Environmental Test Equipment)
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This paper is a focused implementation of ESS or Environmental Stress Screening in a highly focused use - auditing rather than screening. At the end of this paper is a glossary of the unique terms...
(Calibration and Testing Services)
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The ever increasing pressure to more quickly deliver higher reliability products at lower costs is prevalent throughout major industries, such as avionics, communications, networking equipment,...
(Calibration and Testing Services)
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Determining which HALT or HASS chamber can best meet your reliability program requirements takes more than a quick glance of spec' sheets....
(Calibration and Testing Services)
From this Article:
This method will assist HALT & HASS users to monitor PSD changes over time, develop PSD tolerances, evaluate variability between products in HASS, and also provide an effective tool to assess table...
(Vibration and Acceleration Sensing)
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Defense contractors like Raytheon, Lockheed Martin, BAE Systems, Honeywell, and L3, and their suppliers have found Qualmark's technology to be an essential and cost-effective addition to their...
(Calibration and Testing Services)
From this Article:
HALT and HASS testing products...offer many advantages in accelerated testing....
(Calibration and Testing Services)
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The goal of an Accelerated Stress Test program is to make cost effective improvements in product field reliability....
(Calibration and Testing Services)
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This paper will describe the metric of gRMS, how it is calculated in both the frequency and time domains and what factors can cause variations in gRMS calculations....
(Calibration and Testing Services)
From this Article:
The following information should help clarify the specifications used in HALT/HASS chambers....
(Calibration and Testing Services)
From this Article:
Highly Accelerated Stress Screening (HASS) is a production test process that has become a widely accepted method for detecting manufacturing or component changes in a product that could reduce product...
(Vibration and Acceleration Sensing)
From this Article:
With traditional Mil-Spec qualifications growing out-of-date, newer, more comprehensive methods of testing vibration are gaining awareness and acceptance....