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See searches and references containing FAILURE RATE!FAILURE RATE
Frequency with which an engineered system or component fails
Failure rate is the frequency with which any system or component fails, expressed in failures per unit of time. It thus depends on the system conditions
Failure_rate
Probability that a device or component will fail during a year of use
Annualized failure rate (AFR) gives the estimated probability that a device or component will fail during a full year of use. It is a relation between
Annualized_failure_rate
Analysis of potential system failures
mathematical failure rate models with statistical failure mode ratio databases. It was one of the first highly structured, systematic techniques for failure analysis
Failure mode and effects analysis
Failure_mode_and_effects_analysis
Not meeting a desired or intended objective
which a failure occurs Failure rate – Frequency with which an engineered system or component fails Governance failure Market failure – Inefficiently allocated
Failure
Failure of the heart to provide sufficient blood flow throughout the body
people worldwide. Overall, heart failure affects about 2% of adults, and more than 10% of those over the age of 70. Rates are predicted to increase. The
Heart_failure
Prevention of human pregnancy
first-year (or for LAM, first-6-month) failure rates of less than 1%. With typical use, first-year failure rates are considerably higher, at 9%, due to
Birth_control
Any of a set of standard configurations of Redundant Arrays of Independent Disks
the drive failure rate, r (which is assumed identical and independent for each drive). For example, if each of three drives has a failure rate of 5% over
Standard_RAID_levels
toxic environment for sperm and eggs, thus preventing pregnancy. The failure rate of a copper IUD is approximately 0.8% and can prevent pregnancy for up
Comparison of birth control methods
Comparison_of_birth_control_methods
Type of electrolytic capacitor
Early failures or infant mortality failures, constant random failures and wear out failures. Failure types included in the total failure rate are short
Tantalum_capacitor
Withdrawal method of birth-control
use failure rate of 2–8%, while intrauterine devices (IUDs) have an actual use failure rate of 0.1–0.8%. Condoms have an actual use failure rate of 10–18%
Coitus_interruptus
Clinical trial stages using human subjects
historically have experienced the lowest success, having about a 66% failure rate due mainly to adverse effects and other toxicity concerns. A 2022 review
Phases_of_clinical_research
Type of capacitor
areas: early failures or infant mortality failures, constant random failures and wear out failures. Failures totalized in a failure rate are short circuit
Electrolytic_capacitor
Disease where the kidneys fail to adequately filter waste products from the blood
or increased serum creatinine. Diagnosis of chronic failure is based on a glomerular filtration rate (GFR) of less than 15 or the need for renal replacement
Kidney_failure
Birth control and emergency contraceptive device
the copper IUD (failure rate of 0.8%) is comparable to tubal sterilization (failure rate of 0.5%) for the first year. The failure rates for different models
Copper_IUD
Predicted elapsed time between inherent failures of a system during operation
failure prediction based on MTBF implies the total absence of systematic failures (i.e., a constant failure rate with only intrinsic, random failures)
Mean_time_between_failures
Solid conductive electrolyte
areas: early failures or infant mortality failures, constant random failures and wear out failures. Failures totalized in a failure rate are short circuit
Polymer_capacitor
Electromechanical malfunctioning
manufacturers typically specify a mean time between failures (MTBF) or an annualized failure rate (AFR) which are population statistics that can't predict
Hard_disk_drive_failure
Curve for failure rates over time
reliability engineering and deterioration modeling, a bathtub curve is a failure rate graph that curves up at both ends, similar in shape to a bathtub. The
Bathtub_curve
Measure in risk analysis
concept must be related to the dangerous failure rate of a system, not just its failure rate or the failure rate of a component part, such as the software
Safety_integrity_level
Systematic analysis technique
Failure modes, effects, and diagnostic analysis (FMEDA) is a systematic analysis technique to obtain subsystem / device level failure rates, failure modes
Failure modes, effects, and diagnostic analysis
Failure_modes,_effects,_and_diagnostic_analysis
Sub-discipline of systems engineering that emphasizes dependability
was now changing as it moved towards understanding the physics of failure. Failure rates for components kept dropping, but system-level issues became more
Reliability_engineering
Errors and technical difficulties on Xbox 360
was far more resilient. By 2012 the failure rate for the Xbox 360 family was comparable to the PS3 failure rate. The issues proved extremely damaging
Xbox_360_technical_problems
Period of high failure rate of capacitors
The capacitor plague was a problem related to a higher-than-expected failure rate of non-solid aluminium electrolytic capacitors between 1999 and 2007
Capacitor_plague
Systematic technique for failure analysis
profile with specific fixed duration mission phases Sources for failure rate and failure mode data Fault detection coverage that system built-in test will
Failure mode, effects, and criticality analysis
Failure_mode,_effects,_and_criticality_analysis
Functional safety standard
Level is a band of failure rates, represented as a, b, c, d, e. These failure rates are quantified as the Probability of Dangerous Failure per hour, PFHd
ISO_13849
Electro-mechanical data storage device
drive does not relate to the drive's failure rate. A 2011 summary of research, into SSD and magnetic disk failure patterns by Tom's Hardware summarized
Hard_disk_drive
Methods of estimating a woman's fertility
unprotected intercourse, makes imperfect use fairly common. The typical-use failure rate of calendar-based methods is 25% per year. To find the estimated length
Calendar-based contraceptive methods
Calendar-based_contraceptive_methods
Average service life for non-repairable components
the concept of mean time between failures is used to describe the failure rate. MTFF and MTTF (mean time to failure) have identical meanings. The key
Mean_time_to_first_failure
Type of capacitor
FIT rates in the range of 20 to 200 FIT. Field failure rates for aluminum capacitors are in the range of 0.5 to 20 FIT. The data for the "failure rate" specification
Aluminum electrolytic capacitor
Aluminum_electrolytic_capacitor
Unexpected loss of power
Aviation Administration (FAA) was quoted as stating turbine engines have a failure rate of one per 375,000 flight hours, compared to of one every 3,200 flight
Turbine_engine_failure
Methods to determine menstrual phases
method failure rate of 1% per year. The symptothermal method has a method failure rate of 2% per year. Cervical mucus–only methods have a method failure rate
Fertility_awareness
Form of birth control involving a device placed in the uterus
greatest satisfaction among users. Both hormonal and copper IUDs have failure rates of <1%, meaning less than 1 in 100 individuals with an IUD have an unintended
Intrauterine_device
Surgical procedure for male sterilization
generally agreed-upon rate of late failure of about one in 2000 vasectomies—better than tubal ligations for which the failure rate is one in every 200 to
Vasectomy
Process by which components of a system are exercised before being placed in service
is not easy to determine whether there is a decreasing failure rate. To determine the failure time distribution for a very low percentage of the production
Burn-in
Bayonet
competitors, and was the only contract bid entry to have a zero percent failure rate. It is an improved, refined copy of the 6H3 bayonet developed by the
M9_bayonet
Failure analysis system used in safety engineering and reliability engineering
determine (or get a feeling for) event rates of a safety accident or a particular system level (functional) failure. FTA is used in the aerospace, nuclear
Fault_tree_analysis
Device for birth control and STI prevention
the female condom has a 5% failure rate. Inconsistent or incorrect usage has been shown to result in a 21% failure rate. Some benefits of female condoms
Female_condom
Defects which are the underlying cause of a failure
stress cracking. Failure analysis Failure mode and effects analysis (FMEA) Failure modes, effects, and diagnostic analysis (FMEDA) Failure rate Forensic electrical
Failure_cause
Brand of condoms
total condom failure rate was 0.68% for anal intercourse and 1.89% for vaginal intercourse with the One Male Condom. Condom failure rate was defined as
One_Male_Condom
Technique for reporting effectiveness of birth control
significant effects on its failure rate. The Pearl Index has unique shortcomings, however. It assumes a constant failure rate over time. That is an incorrect
Pearl_Index
Form of failure mode and effect analysis for electrical connectors and wiring
possible failure mode and its associated failure rate can be computed such that the sum of the failure rates of each failure mode equals the failure rate of
Bent_pin_analysis
Models the mean time to failure of a semiconductor circuit due to electromigration
not based on a specific physical model, but flexibly describes the failure rate dependence on the temperature, the electrical stress, and the specific
Black's_equation
Mechanical design approach
2 according to Black). Physics of failure is typically designed to predict wearout, or an increasing failure rate, but this initial success by Black
Physics_of_failure
Explosive weapon with small submunitions
after a conflict has ended and are costly to locate and remove. This failure rate ranges from two percent to over 40 percent. Cluster munitions are prohibited
Cluster_munition
Diagram for redundant systems
components that contribute to a lower failure rate. Each block represents a component of the system with a failure rate. RBDs will indicate the type of redundancy
Reliability_block_diagram
1990s safety scandal involving Ford Explorer SUVs fitted with Firestone tires
crashes caused by the failure of Firestone tires installed on light trucks and SUVs made by Ford Motor Company. Unusually high failure rates of P235/75R15 ATX
Firestone and Ford tire controversy
Firestone_and_Ford_tire_controversy
United States Air Force cluster bomb
failure rate is about 5%. This equates to about 10 bomblets not exploding on impact of the 202 bomblets dropped. Landmine Action claimed the failure rate
CBU-87 Combined Effects Munition
CBU-87_Combined_Effects_Munition
Cervical barrier type of birth control
method of birth control. It is moderately effective, with a one-year failure rate of around 12% with typical use. It is placed over the cervix with spermicide
Diaphragm_(birth_control)
Recall of hip replacement implants
The recall came after data from a study indicated that the five year failure rate of this product is approximately 13%, or 1 in 8 patients. Even if the
2010_DePuy_Hip_Recall
Integration of software development and operations
lead time for changes), and stability (mean time to recover, change failure rate) were published in that year's State of DevOps report. However, the research
DevOps
Space Shuttle Challenger disaster report
what they claimed the failure rate ought to be, given that it was a crewed vehicle, and working backward to generate the failure rate of components. Feynman
Rogers_Commission_Report
Test administered to applicants for Canadian citizenship
The failure rate on the citizenship test was historically low. In 2008, approximately 4% of the 145,000 test takers failed. However, the failure rate for
Canadian_Citizenship_Test
models use failure data from testing to forecast the failure rate or MTBF into the future. The models depend on the assumptions about the fault rate during
List of software reliability models
List_of_software_reliability_models
Process of collecting and analyzing data to determine the cause of a failure
Failure analysis is the process of collecting and analyzing data to determine the cause of a failure, often with the goal of determining corrective actions
Failure_analysis
Line of portable media players by Apple (2001–2022)
line had an average failure rate of 13.7% (although they note that comments from respondents indicate that "the true iPod failure rate may be lower than
IPod
Engineering discipline
failure rate and failure mode ratio of the function or component. This quantization is difficult for software ---a bug exists or not, and the failure
Safety_engineering
New company developing a novel, scalable business
At the early stages, startups face significant uncertainty and high rates of failure. However, a minority achieve notable success and influence, with some
Startup_company
Function in actuarial science
the hazard function, and in reliability theory it corresponds to the failure rate. It has units of inverse time, and integrating it over an interval gives
Force_of_mortality
Eleventh letter in the Greek alphabet
satellite in 1970. Lambda denotes the failure rate of devices and systems in reliability theory, and it is measured in failure events per hour. Numerically, this
Lambda
Intrauterine device
is one of the most effective forms of birth control with a one-year failure rate around 0.2%. The device is placed in the uterus and lasts three to eight
Hormonal_intrauterine_device
Topics referred to by the same term
Structural failure, a material stressed to its strength limit In pattern matching, failure is when a (sub)pattern does not match a string Failure rate Market
Failure_(disambiguation)
Logic error due to ignoring the base rate
The base rate fallacy, also called base rate neglect or base rate bias, is a type of fallacy in which people tend to ignore the base rate (e.g., general
Base_rate_fallacy
Inadequate gas exchange by the respiratory system
In clinical trials, the definition of respiratory failure usually includes increased respiratory rate, abnormal blood gases (hypoxemia, hypercapnia, or
Respiratory_failure
Ways electronic components fail and prevention measures
resulting in the bathtub curve graph of failure rates. Burn-in procedures are used to detect early failures. In semiconductor devices, parasitic structures
Failure of electronic components
Failure_of_electronic_components
Birth control methods that act on the endocrine system
every day—have typical failure rates higher than perfect-use failure rates. Contraceptive Technology reports a typical failure rate of 3% per year for the
Hormonal_contraception
Data structure hashing scheme
basic algorithm. Some of these methods can also be used to reduce the failure rate of cuckoo hashing, causing rebuilds of the data structure to be much
Cuckoo_hashing
Success rate of becoming pregnant
cells. A fertilization rate of zero in one cycle, where no oocytes become fertilized, is termed a total fertilization failure. Repeated ICSI treatment
Pregnancy_rate
1963–1979 reforms by the Shah of Iran
their traditional bases of power, and met with difficulties from a high failure rate for new farms and an exodus of agricultural workers to Iran's major cities
White_Revolution
Microsoft video game console
and Europe. The earliest versions of the console suffered from a high failure rate, indicated by the so-called "Red Ring of Death", necessitating an extension
Xbox_360
Semi-automatic pistol
smaller than 5 cm (2.0 in), R100 value smaller than 11 cm (4.3 in). Its failure rate is lower than 2 out of 1000 and its lifespan is 3000 rounds. Redesigned
QSZ-92
assembly level. Based on the physics of failure, Sherlock predicts failure mechanism-specific failure rates over time using a combination of finite element
Sherlock Automated Design Analysis
Sherlock_Automated_Design_Analysis
journeys is complicated and the exploration of Mars has experienced a high failure rate, especially the early attempts. Roughly sixty percent of all spacecraft
Exploration_of_Mars
Manufacturing styles of an electronic device
than rated voltage and lower current loads as well as lower temperature extend the life time. Capacitors are reliable components with low failure rates, achieving
Capacitor_types
Measure of inequality of a statistical distribution
decreasing failure rate distributions and point processes with decreasing failure intensity rate and is positive for the increasing failure rate distributions
Gini_coefficient
Topics referred to by the same term
pregnancy rate is used: Artificial insemination § Success rates In vitro fertilisation § Success rates All pages with titles containing Success rate Failure rate
Success_rate
Substance used to fill cavities in teeth
as failures in one study, the Annual Failure Rate was 1.9%. However, when repaired restorations were reclassified as successes instead of failures, the
Dental_composite
Person who repairs and maintains computers and servers
longer function. Blackblaze's annual report indicates that the hard drive failure rate for the first quarter of 2020 was 1.07%. Education requirements vary
Computer_repair_technician
Percentage of a sum of money charged for its use
be used to generate a return on investment greater than the interest rates. Failure of a borrower to continue paying interest is an example of default,
Interest_rate
Motor vehicle
shaft H5 transmissions are much more robust and do not exhibit the same failure rate as the three shaft H5. The new design first entered service in the 2005
Honda_H5_transmission
Measure of frequency of electric power interruptions
_{i}N_{i}}}{\sum {N_{i}}}}} where λ i {\displaystyle \lambda _{i}} is the failure rate and N i {\displaystyle N_{i}} is the number of customers for location
SAIFI
Injectable form of birth control
typical use failure rate for DMPA was the same as his perfect use failure rate: 0.3%. DMPA estimated typical use first-year failure rate = 0.3% in: Contraceptive
Medroxyprogesterone_acetate
Aircraft launching system developed for the US Navy
has an average failure rate of 1 in 240 cycles. According to a March 2015 report, "Based on expected reliability growth, the failure rate for the last reported
Electromagnetic Aircraft Launch System
Electromagnetic_Aircraft_Launch_System
Seagate Technology hard disk drive
reported to have unusually high failure rates, due to a parking ramp that was made from different materials. The failure rates were approximately 5.7 times
ST3000DM001
Business process improvement technique
real-life operation. (The failure rate of a 6σ distribution with the mean shifted 1.5σ is not equivalent to the failure rate of an unshifted "true 4.5σ
Six_Sigma
Hyundai Motor Company electric vehicle sub-brand
for ICCU failures in November after initial remedies failed to solve the issue. As of March 2026[update], Hyundai says that the failure rate is around
Ioniq
Contraceptive that destroys sperm
spermicides have a perfect use failure rate of 6% per year when used correctly and consistently, and 16% failure rate per year in typical use. This list
Spermicide
Reliability test applied to integrated circuits
{\displaystyle A_{\text{f}}} Failure Rate per hour = λ hours {\displaystyle \lambda _{\text{hours}}} Failures in Time = Failure Rate per billion hours = FIT
High-temperature operating life
High-temperature_operating_life
Data segmentation technique
different storage devices, the failure of one device causes the corruption of the full data sequence. In effect, the failure rate of the array of storage devices
Data_striping
Branch of statistics
certain time? Of those that survive, at what rate will they die or fail? Can multiple causes of death or failure be taken into account? How do particular
Survival_analysis
Corrosion-analysis tool
used to identify, pressure / temperature, subsequent failure mechanism and possible failure rate. They may be based upon Construction drawings, Process
Corrosion_loop
Implantable medical device used for birth control
cervical mucus. The levonorgestrel IUD is highly efficacious and has a failure rate of only 0.2% in the first year of use. An additional benefit of hormonal
Contraceptive_implant
Electronic customer relationship management
defined process. Failure rates in CRM from 2001 to 2009: 2001- 50% failure rate according to the Gartner group 2002- 70% failure rate according to Butler
ECRM
Probability distribution
necessarily the only continuous probability distribution that has a constant failure rate. The quantile function (inverse cumulative distribution function) for
Exponential_distribution
Topics referred to by the same term
(Federazione Italiana Tennis) Fit (manufacturing) Engineering fit Failures in time, or failure rate FITS (Flexible Image Transport System), a digital file format
Fit
Malfunction of medical implants
provider involved in its installation. Implant failure can have any number of causes. The rates of failure vary for different implants. The monitoring of
Implant_failure
associated with a high early and late failure rate. At 3 years only 26 percent were event-free and survival rate was only 60 percent. Most hospitals have
Management_of_heart_failure
{\displaystyle {\text{MTTF}}={\frac {1}{\lambda }}[hours]\!} where λ is the failure rate for the component. The relationship between MTBF and MTTF is expressed
MTTFd
Firearms cartridge
that year, testing at Aberdeen Proving Ground showed the ArmaLite AR-15 failure rate had declined to 2.5/1,000, resulting in the ArmaLite AR-15 being approved
.223_Remington
Failure mechanism in MOSFETs
manufacturing defects. A low constant failure rate which is random in nature. Wear out failures are increasing failures due to aging semiconductor degradation
Time-dependent gate oxide breakdown
Time-dependent_gate_oxide_breakdown
Birth control that provides effective contraception for an extended period
contraception because their efficacy is not reliant on patient compliance. The failure rates of IUDs and implants is less than 1% per year. LARCs are often recommended
Long-acting reversible contraceptives
Long-acting_reversible_contraceptives
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