INFLUENCE OF COLD ROLLING AND AGING ON THE SHARP NOTCH PROPERTIES OF BETA TI SHEET
Influence of cold-rolling and aging on the sharp notch properties of beta titanium sheet
COLD WORKING↗
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INFLUENCE OF COLD ROLLING AND AGING ON SHARP-NOTCH PROPERTIES OF BETA TITANIUM SHEET
Cold rolling and aging effects on sharp-notch properties of beta titanium sheet alloy
NOTCH STRENGTH↗
The influence of age-associated changes in older pilots during re-learning in the new aviation technology and during performance
Influence of age-associated changes in older pilots during relearning of aviation technology and during performance
PILOT PERFORMANCE↗
Effect of parachute jumps on the adaptive reactions in persons of different age groups
Effect of parachute jumps on persons in different age groups
AGE FACTOR↗
Age forming of center piece head s-1c final report
Age forming aluminum for center piece head of Saturn S- IC stage
AGING↗
Strain aging effects in tungsten due to carbon
Strain aging effects in tungsten due to carbon
TUNGSTEN↗
Organic synthesis in algal cells separated into age groups by fractional centrifugation.
Synthetic activity during nonsynchronized growth chlorella, separated into age groups by fractional centrifugation
GROWTH↗
The interrelationship between bone density and cortical thickness in the second metacarpal as a function of age
Mineral content of bone cortex related to thickness in second metacarpal as a function of age and sex
BONE↗
Rates of involution of vertebrae and femur in aging
Ash concentration, femoral thickness, and vertebral mineralization related to aging in humans
AGING↗
Adaptive age replacement
Bayesian approach to adaptive age replacement treated by dynamic programming
BAYESIAN STATISTICS↗
Aging behavior of explosively deformed 2219 aluminum.
Aging behavior of explosively deformed 2219 Al investigated by transmission electron microscopy
ELECTRON MICROSCOPY↗
Influence of age on liver glycogenesis in rats exposed to acceleration stress.
Age effect on liver glycogenesis in rats exposed to acceleration stress
ACCELERATION STRESS↗
The problem of the aged scientific organization
Problem of aged scientific organization and suggested solutions
MANAGEMENT PLANNING↗
Whole-rock rubidium-strontium age of the Silurian-Devonian boundary in northeastern North America
Whole-rock rubidium-strontium age of Silurian Devonian boundary in northeastern North America
STRONTIUM↗
Study for age-forming 2014 aluminum alloy skins Final report
Age forming of aluminum alloy using technique of restraint to shape skins
AGING↗
Maintaining the safety of an aging fleet of aircraft
The current status of the Douglas Aging Fleet is examined in light of increasing concern for the possibility of the onset of widespread cracking and recent industry activity to minimize the concern. A fleet monitoring program together with an augmented maintenance program is proposed as a possible means to reduce the concern. Six candidate options for maintenance program augmentation are examined which have been shown to be effective in detection of widespread fatigue damage. A brief example of how this system might be applied to the DC-9 Fleet is presented.
Aging Aircraft↗
Fracture mechanics research at NASA related to the aging commercial transport fleet
NASA is conducting the Airframe Structural Integrity Program in support of the aging commercial transport fleet. This interdisciplinary program is being worked in cooperation with the U.S. airframe manufacturers, airline operators, and the FAA. Advanced analysis methods are under development and an extensive testing program is underway to study fatigue crack growth and fracture in complex built-up shell structures. Innovative nondestructive examination technologies are also being developed to provide large area inspection capability to detect corrosion, disbonds, and cracks. This paper reviews recent fracture mechanics results applicable to predicting the growth of cracks under monotonic and cyclic loading at rivets in fuselage lap-splice joints.
Aging Aircraft↗
Survey of French activities concerning structural airworthiness and aging aircraft
French activities concerning Structural Airworthiness and Aging Aircraft are presented. A first part is derived to Basic and Applied Research actions while a second one deals with Full-Scale Testing, Tear-down inspections and continuing Airworthiness approaches.
Aging Aircraft↗