Several researchers work on the residual life
structure by considering either mechanical behavior or physical property.
The accurate residual life
prediction at the beginning of performance degradation can prevent the complex systems from suffering the serious fault or major damage emerging.
Another important reliability measure for non-negative random variables is the mean residual life
, which is defined as E(X - x|X > x).
As a basic concept for the calculation of building residual life
, an approach is proposed based on "safe operation by technical condition" principle.
The main drawback of the most current regulations at the moment for assessment and determination of residual life
of metal structures and for handling equipment is the use of such physical and mechanical properties of the metal, whose definition is carried out only by destructive testing, for example--testing of samples of metal handling machine tension, cyclic strength, toughness etc.
can be estimated based on the quality of available information, assessment level, and appropriate assumptions to provide an adequate safety factor for operation until the next scheduled inspection(1).
In situation (a) in Figure 1, all the remaining policies are canceled before June 1, 2001, so the household customer residual life
is the time from the first notification of cancellation date until cancellation of all other policies occurs.
These nine articles describe incidents of structural failure and how engineers determined the cause of collapse, addressing failures due to long-term behavior typical of heavy structures, experimental research, collapse prediction and creep effects, the effects of creep on new structures, experimental studies on damaged pillars, monitoring of long-term damage in long-span masonry construction, modeling of the long-term behavior of masonry towers, repair techniques and long-term damage of massive structures, and simple checks engineers can use to prevent the collapse of heavy historical structures and residual life
prevision through a model.
Last year 7.9% of the Welsh motorway network and 11.1% of the trunk road network required close monitoring of structural condition after being classed as having a negative residual life
The system records the actual temperature loading patterns and number of starts, and on the basis of a link to the appropriate model determines the likely residual life
of the hot gas components.
That is, on the understanding that these plants must in any event comply with the IPPC (Integrated Pollution Prevention and Control) Directive 96/61/EC ahead of October 2007.The final debate centred on how long this residual life
would last: 20,000 hours was the acceptable minimum for the United Kingdom, whereas Denmark wanted to limit this respite to a maximum of 10,000 hours.
The Society of American Florists' Jennifer Sparks says most pesticides used are low in toxicity and have a short residual life
. "In Colombia, flower growers can only use pesticides approved in the U.S.," says Sparks.