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Reliability Technologies for Safety and
Customer Satisfaction
Safety and Soundness Based on Reliability
ARINOBU Mutsuhiro
Trends in Reliability Technologies for Safety
and Customer Satisfaction
KAWAKAMI Takashi / FUJIYAMA Kazunari
Safety has recently come to be recognized as a matter of key importance
from the political, economic, and technological viewpoints. The
principle of reliability is similar to that of safety, and reliability
is the primary characteristic of quality. Industrial products must
provide not only safety but also reliability in order for customers
to be satisfied with their cost performance.
This paper introduces
the conception of safe and satisfactory products, and the role
of reliability technologies in realizing such conception
as hardware products.
Reliability Design of Electronics Packaging
for High-Performance Digital Equipment
HIROHATA Kenji / TAKUBO Chiaki / TAKAHASHI Kuniaki
Successive improvements in the performance of consumer electronic
products are spurring demand for high-speed design technologies
and high-density packaging technologies. In electronics packaging
design, the growing complexities in conjunction with the decrease
in design margins are driving the need for a new reliability design
method applicable to quality problems.
To improve design review
in terms of reliability, Toshiba has developed a multidisciplinary
reliability design method based on statistical
and probabilistic methods for electronics packaging in order to
reveal the reliability relationships among packaging solutions
and to identify failure risks. This paper presents our activities
in the field of electronics packaging reliability design technologies.
Reliability Assurance Technologies for Advanced
Semiconductor LSI Devices
SETOYA Takashi / WADA Akira / DOHI Yasuhiro
Advanced semiconductor LSI devices utilizing the 90 nm process
rule are now being mass-produced and applied to DVD recorders,
thin TVs, and digital cameras.The demand for even greater miniaturization
and higher performance is driving the development of 65 nm process
devices, whose prospect is in sight in 2005, where reliability
assurance technologies at the margins of physical sensitivity are
indispensable.
Toshiba has developed a testing method to eliminate
defective materials and a pointing method to identify defect locations.Quality
is designed
so as to be embedded in products when they are manufactured.We
have completed a quality accreditation system to satisfy customers'
requirements with the shortest possible delivery times.
New Method of Reliability Evaluation for Air-Conditioner
Compressor Bearings
HATTORI Hitoshi / ITOH Yasutaka / MIURA Kazuhiko
Toshiba has applied numerical analysis to mixed lubrication in
order to evaluate the reliability of journal bearings for rotary
compressors in air conditioners. In this analysis, the modified
Reynolds equation and the elastic contact equation, taking the
effect of surface roughness into consideration, are solved as a
coupled problem, and the effect of elastic deformation of the bearing
surface is also considered. The appearance of solid contact in
hydrodynamic lubrication can be captured by the analysis. Reliability
evaluation is achieved by a comparison between the solid contact
force obtained by the analysis and a reference value obtained by
an examination.
We are carrying out rotary compressor development
using this reliability evaluation method in the design process.
Technologies Enhancing Reliability and Profitability
of Thermal Power Plants
FUJIYAMA Kazunari / IINO Yutaka / WATANABE Shunzo
Toshiba is devoting efforts to the improvement of thermal power
plant reliability and efficiency using system technologies integrating
sensing, vibration mechanics, thermal-fluid dynamics, material engineering,
structural reliability engineering, information engineering, and
management engineering. We have developed several systems to realize
safer and more efficient equipment such as turbines; namely, a remote
monitoring and diagnosis system, a life assessment system, a risk
management system, and an operation and asset management system.
A total solution service can be provided by integrating these systems
to meet the user's requirements.
Constant Improvements in Structural Reliability
of Nuclear Power Generation System Components
WATANABE Yukio / ASANO Masayuki
In recent years, demand has been increasing for nuclear power generation
systems with higher structural reliability to play an important
role as a basic resource for a clean and steady energy supply,
against the background of the need to reduce fossil fuel consumption
and protect the global environment.
To meet these requirements,
Toshiba has been making constant efforts to improve equipment,
material, manufacturing, and water chemistry
technologies, in order to develop reliable nuclear power generation
systems based on the optimal understanding of operating conditions
measured and estimated by a systematic analytical approach.
High-Reliability Technologies for
World's Fastest Elevators
NAKAGAWA Toshiaki / NISHIKAWA Takashi / KIMURA Hiroyuki
Toshiba supplied the two fastest elevators in the world to the Taipei 101 Building,
which opened on December, 2004. The most important aspects in the development
of these elevators were securing safety and reliability as well as a comfortable
ride. To realize these requirements, we studied confirmation methods for inspection
processes and tools, carried out tests by trial manufacturing, and made estimations
by simulations. The final measurement data at Taipei 101 corresponded to the
data obtained in the development tests and simulations. As a result, the safety
and reliability were verified and it was confirmed that a comfortable ride was
achieved.
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