Package 'ReliaLearnR'

Availability (1 - unavailability / total)

Description

Availability is the proportion of time a system is in a functioning condition. This function computes availability given unavailable times and total times.

Usage

avail(unavailTime, totalTime)

Arguments

unavailTime	Numeric scalar or numeric vector of unavailable times.
totalTime	Numeric scalar or numeric vector of total times (same units as unavailTime).

Value

Numeric scalar: availability for the period (between 0 and 1).

Examples

avail(100, 1000)
avail(c(5,10), c(500,600))

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Failure rate (lambda)

Description

Failure rate is the frequency with which an engineered system or component fails, expressed in failures per unit of time. This function computes failure rate given failure counts and total operating times.

Usage

fr(failures, totalTime)

Arguments

failures	Numeric scalar or numeric vector of failure counts (non-negative).
totalTime	Numeric scalar or numeric vector of total operating times.

Value

Numeric scalar: failures per unit time (failures / totalTime).

Examples

fr(75, 5000)
fr(c(10,5), c(1000,2000))

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Launch the Life Data Analysis Tutorial

Description

This function launches an interactive tutorial for life data analysis.

Usage

lda()

Value

This function does not return a value.

See Also

https://paulgovan.github.io/ReliaLearnR/

Examples

if (interactive()) {
  lda()
}

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Mean Time Between Failures (MTBF) for repairable items.

Description

MTBF = total operating time / number of failures. The MTBF is the expected time between consecutive failures. It is commonly used for repairable items. The behavior is the same as mttf here; keep separate name for semantic clarity.

Usage

mtbf(failures, totalTime)

Arguments

failures	Numeric scalar or numeric vector of failure counts (non-negative).
totalTime	Numeric scalar or numeric vector of total operating times.

Value

Numeric scalar: MTBF. If number of failures is zero, returns Inf (with a warning).

Examples

mtbf(5, 1000)
mtbf(c(2,3), c(500,500))

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Mean Time To Failure (MTTF)

Description

For non-repairable items MTTF = total operating time / number of failures. The MTTF is the expected time to the first failure. It is commonly used for non-repairable items. The behavior implemented is the same as mtbf here; keep separate name for semantic clarity.

Usage

mttf(failures, totalTime)

Arguments

failures	Numeric scalar or numeric vector of failure counts (non-negative).
totalTime	Numeric scalar or numeric vector of total operating times.

Value

Numeric scalar: MTTF. If number of failures is zero, returns Inf (with a warning).

Examples

mttf(5, 1000)
mttf(c(2,3), c(500,500))

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Launch the RAM Analysis Tutorial

Description

This function launches an interactive tutorial on Reliability, Availability, and Maintainability (RAM) analysis.

Usage

ram()

Value

This function does not return a value.

See Also

https://paulgovan.github.io/ReliaLearnR/

Examples

if (interactive()) {
  ram()
}

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Launch the Reliability Block Diagram Tutorial

Description

This function launches an interactive tutorial on Reliability Block Diagrams and system reliability, covering series, parallel, mixed, and k-out-of-n configurations as well as an introduction to Fault Tree Analysis.

Usage

rbd()

Value

This function does not return a value.

See Also

https://paulgovan.github.io/ReliaLearnR/

Examples

if (interactive()) {
  rbd()
}

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Reliability (1 - outage / total)

Description

Reliability is the probability that an item will perform its intended function without failure over a specified period under stated conditions. This function computes reliability given outage times and total times.

Usage

rel(outageTime, totalTime)

Arguments

outageTime	Numeric scalar or numeric vector of forced outage times.
totalTime	Numeric scalar or numeric vector of total times (same units as outageTime).

Value

Numeric scalar: reliability for the period (between 0 and 1).

Examples

rel(100, 1000)
rel(c(10,20), c(500, 600))

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Launch the Repairable Systems Analysis Tutorial

Description

This function launches an interactive tutorial on Repairable Systems Analysis.

Usage

rs()

Value

This function does not return a value.

See Also

https://paulgovan.github.io/ReliaLearnR/

Examples

if (interactive()) {
  rs()
}

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Launch the Reliability Testing Tutorial

Description

This function launches the Reliability Testing tutorial

Usage

rt()

Value

This function does not return a value.

See Also

https://paulgovan.github.io/ReliaLearnR/

Examples

if (interactive()) {
  rt()
}

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