RAM/Engineering Specialties Analyses

Need a quick, inexpensive, and independent check on those results from your COTS Reliability tool?  Worried that your product might not satisfy all the assumptions used in the tool?  Do you even know what those assumptions are in your COTS Reliability tool?

Flat Fee, 24 Hour Turnaround, Assumption-free
     Independent Reliability Analysis Products

$995 (USD) Single Failure Mode Reliability Analysis:  Based on your data, your failures and survivors (suspensions) no matter how many or how few, and only using your data without using any assumptions (unstated or otherwise), we will tell you:

  • How sure you can be that your product is failing with an infant mortality failure mode, wearout failure mode, and old age failure mode
  • How sure you can be that your product's reliability meets your the critical reliability you need
  • The full uncertainty distribution of your product's reliability at whatever service life you specify

We do not use any of the COTS Reliability Analysis tools on the market today.  Our 19 page report documenting our independent and custom analysis of your data, delivered to you within 24 hours of Attwater Consulting receiving your data, will tell you what you really need to know about your product's reliability, without using any assumptions.   We also provide something that you will not see in any COTS Reliability tool report, complete derivations from first principles of the methods used in your custom analysis.  See a specimen of the 19 page report that you will receive within 24 hours of sending us your product's failure and survivor data.  Contact us for more information.  We take most major credit cards.

$250 (USD) MTBF/MTTF Addendum:  Some companies still like to see what the Mean Time Between Failures or Mean Time To Failure is for their product.  As an addendum to our Single Failure Mode Reliability Analysis, Attwater Consulting will provide the entire probability distribution for MTBF/MTTF based on the data and the probability that your product achieves your specified critical MTBF/MTTF level.  Contact us for more information to order.  We take most major credit cards.

$1995 (USD) Two Failure Mode Reliability Analysis:  Some products fail for multiple reasons, with multiple failure modes.  If you suspect your product is failing for two reasons, perhaps the COTS Reliability Analysis tool you use has produced a bent regression line, Attwater Consulting can produce for you within 24 hours of receiving your failure and survivor data a reliability analysis that will consider two failure modes and send you a comprehensive report.  The method we use to analyze your data for two failure modes is unique, and cannot find multiple failure modes if they do not actually exist in your data.  Many COTS Reliability Analysis tools will find as many failure modes as you tell them to find, whether they exist or not.  (Should our analysis reveal that your product only fails with one failure mode, the report provided will default to our Single Failure Mode Reliability Analysis report, with an explanation that two failure modes do not exist in the data.  See the validation study in this paper for the US Coast Guard HU-25 AC Generator.)  As with our Single Failure Mode Reliability Analysis product, our extensive Two Failure Mode Reliability Analysis report will tell you the probabilities of your product failing in infant mortality, wear-out, and old-age failure modes, for each of the two failure modes, as well as the proportions for your product failing in each of these two failure modes.  (This can be especially helpful to your engineers in finding the exact causes of your product's failures and can save you many times the price of this analysis in engineering labor.)  Full probability distributions based on the data are provided for all quantities of interest, including for the reliability of your product at your specified critical service life.  Contact us for more information.  We take most major credit cards.

Other RAM Analysis Products from Attwater Consulting

Reliability Sensitivity Analysis If you are not yet sure what the critical service life is for your product, or what the critical reliability level is that you need, Attwater Consulting will prepare a report that demonstrates how the reliability probability distributions based solely on your data change over a range of critical service life values that you specify. This report also provides parameterization of the risks of your product not exceeding a range of specified critical reliability values over this range of critical service life values.  There is no COTS tool on the market that can provide this type of custom reliability sensitivity analysis.  Contact us for more information and to discuss your needs for reliability sensitivity analysis; report pricing and delivery times vary.  We take most major credit cards.

Multiple Failure Mode Analysis The failure and survivor data for many products may be the result of more than two failure modes.  Attwater Consulting will prepare a report that identifies and confirms the presence of the specified number of failure modes in the data, if and only if they actually exist, locating with associated assurance measures the failure mode type to enable effective failure mode analysis and preventative maintenance schemes and schedules.  This is an expansion of our Two Failure Mode Reliability Analysis product, and report pricing and delivery times vary.  Contact us for more information and to discuss your needs for multiple failure mode analysis.  We take most major credit cards.

Cost Effective Preventative Maintenance Scheduling Analysis When provided with costs for replacement and costs for preventative maintenance refurbishment of a product (along with your failure and survivor data), Attwater Consulting can prepare a report that demonstrates the cost savings possible within your specified acceptable risk levels as a function of scheduled preventative maintenance intervals.  With this information, a preventative maintenance schedule may be selected that produces the maximum cost savings over allowing failures in service of the product, at your acceptable risk levels.  (See the paper on how this type of analysis saved significant PM costs for the US Coast Guard with the AC Cooling Turbine for their fleet of C130 aircraft.)  Contact us for more information and to discuss your needs for finding the most cost effect preventative maintenance schedule; report pricing and delivery times vary.  We take most major credit cards.

Optimal Cost Reliability Verification Plan Verification of a required reliability for a product can be very expensive.  When you provide Attwater Consulting with the required reliability for your product at your specified critical service life, the maximum acceptable risk of your product not meeting the required reliability with a successful verification (the risk to be shouldered by the customer for the product), costs for each unit to be tested, and unit costs for testing as a function of duration, Attwater Consulting will prepare a report with a verification plan that provides the lowest cost.  Included also in this report will be full probability distributions for the risk that this plan may not be successful when the reliability requirement is indeed satisfied (the risks for the producer of the product).  Contact us for more information and to discuss your needs for finding the most cost effective verification plan for your product; report pricing and delivery times vary.  We take most major credit cards.

Analysis of How Reliability Changes as a Function of Numbers of Repairs or Refurbishments Many products are repaired or refurbished and returned to service.  The repair or refurbishment process may affect the subsequent reliability after a repair, which may increase or decrease the risk of a subsequent unexpected failure of the product.  Appreciable cost savings and uptime may be achieved by taking advantage of this information in developing a preventative maintenance scheme or schedule, adjusting the maintenance schedule based on the number of repairs or refurbishments.  When you provide your product's failure and survivor data, along with the number of times a product has been repaired or refurbished for each datum, Attwater Consulting will prepare a report that demonstrates how the reliability changes as a function of the number of times a product has been repaired or refurbished.  Included will be an analysis of how the critical life and failure mode of the product changes as a function of the number of times a product has been repaired or refurbished.  This information can be used to achieve cost effective decisions regarding repair or replacement of a product when it fails in service.  (See the paper for how this analysis worked for the US Navy's F/A-18 E/F Superhornet, General Electric F414 low bypass gas turbine engine.)    Contact us for more information and to discuss your needs for how reliability changes for your product as a function of numbers of repairs; report pricing and delivery times vary.  We take most major credit cards.

Other Custom RAM/Engineering Specialty Analysis Reports The above reports provide a good idea of the general types of problems that Attwater Consulting solves.  Our solutions always provide the information needed to make fast, effective, and comfortable decisions, and we always avoid "analysis paralysis."  Since the fundamental behind all of the engineering specialties (RAM, Safety, Logistics, Manufacturability, Supportability, Quality, Compatibility, Survivability, Vulnerability, Commonality, Dependability, Accessibility, Sustainability, Seviceability, Verifiability, Producibility, Radcon, Controllability, Operability/Human Factors, Risk Management, Etc.) is uncertainty, usually small amounts of uncertainty at stringent performance levels, Attwater Consulting can solve just about any problem in the "ilities" for you, quickly and cleanly.  Contact us for more information and to discuss how we can solve your problem in the engineering specialties.


Independent Engineering Assessments We do these also!


What Makes Attwater Consulting Analyses Unique

Because of the base in uncertainty, Engineering Specialty problems are equivalent to risk problems.   Attwater Consulting offers the same unique approach to solving Engineering Specialty problems that we use in solving impossible Risk Analyses and Assessment problems - Bayesian approaches coupled with use of Markov Chain Monte Carlo methods.  Attwater Consultants have solved a number of difficult Engineering Specialty problems, and many are documented in some of our recent papers.  The hallmarks of the unique approach taken by Attwater Consultants is to use all the available data, including data that most others (including most COTS tools) must discard, and avoid bias by developing solutions without the use of any unnecessary assumptions.  This always results in easy, quick, and comfortable decision making about what to do to solve your problem, at risk levels that are tolerable.


Attwater Consultants provide unusually powerful RAM/Engineering Specialty Analyses that help you insure your project from perils of the unknown.   Contact us for more information on how an Attwater Consultant can help fine tune your Projects into assured successes.  We selectively accept short term and long term assignments all over the world; language used is English.