FOR WHOM INTENDED: This course is for individuals such as quality and reliability specialists who specify screens and interpret results, project managers wishing to reduce life cycle costs, production and inspection managers whose people screen and interpret results, environmental test specialists who help develop optimum screens, and design engineers using stress testing for product development and design verification.
BRIEF COURSE DESCRIPTION This course shows why Environmental Stress Screening (ESS) and its modern descendents, HALT (Highly Accelerated Life Testing) and HASS (Highly Accelerated Stress Screening) are important steps in the development, design and manufacture of both commercial and military systems that require high-reliability performance. It demonstrates the purpose of screening, which is to precipitate and make visible any existing latent flaws. Well-screened systems have greatly improved mean time between failure (MTBF) rates, their life cycle costs are lower, their reliability is higher. Environmental Stress Testing and HALT have long been used in the development and design of new products.
This course addresses thermal and vibration environments and test facilities, how to prepare before performing HALT, and how to run HALT tests. Single-environment tests are discussed, and then combined environments. Fixturing, HALT profile writing, failure types and analysis and data analysis topics are considered. The HASS section of the course shows how to develop an effective screening process. The course concludes with a discussion of HALT/HASS specifications.
The course is presented as a series of highly-interactive lecture/discussion sessions. Problems for individual and group solution are interspersed throughout the course to act as training aids and to evaluate class progress. There will be a class exercise in writing a HALT profile—class members will give suggestions while five common profiles are written in a user friendly interface.
Special-interest discussions are encouraged outside of the regular course sessions.
PREREQUISITES TTi recommends that this course be taken after Course No. 116, Fundamentals of Vibration For Test Applications and either Course 230, Climatic Test Techniques or Course 425, Environmental Testing Procedures.
DIPLOMA PROGRAMS This course is required for TTi‘s Climatic Test Specialist (CTS) and Mechanical Design Specialist (MDS) diploma program. It may be used as an elective for any other TTI specialist diploma program.
Text Each student will receive 180 days access to the on-line electronic course workbook. Renewals and printed textbooks are available for an additional fee.
Internet Complete Course 240 features almost ten hours of video as well as more in-depth reading material. All chapters of course 240 are also available as OnDemand Internet Short Topics. See the course outline below for details.
Course Hours, Certificate And CEUs Class hours/ days for on-site courses can vary from 14–35 hours over 2–5 days as requested by our clients. Upon successful course completion, each participant receives a certificate of completion and one Continuing Education Unit (CEU) for every ten class hours.
Click for a printable course outline (pdf).
Click for a printable course outline (pdf).
Revised 180913