A, B C, D Samples in Automotive

Summary

In this session, automotive expert Thota Krishna Hema explains the concept of prototype samples (A, B, C, D) in the automotive industry. These prototypes, under development, exhibit incremental functionality improvements for testing and integration with vehicles. A-sample prototypes offer limited functionality and are used for preliminary investigations. B-samples provide basic functionalities, designed for continuous tests and major function verifications. C-samples are fully functional products made with series production tools, used for validation and pre-series tests. Finally, D-samples are supplier-provided for design release, similar to C-samples but with added qualifications for pilot production.

Highlights

• A-sample is the primary prototype level; low in functionality but offers crucial early testing insights. 🚀
• B-sample adds more functions, enabling comprehensive testing in test vehicles. 🏎️
• C-sample is almost production-ready, thoroughly tested using series production tools. 🔧
• D-sample, similar to the C-sample, ensures end-level design accuracy and readiness for pilot production. 🚀
• Validation and verification are key components at each prototype level to ensure precision and functionality. ✅

Key Takeaways

• A-samples are early-stage prototypes with limited features for basic feasibility testing. 🌟
• B-samples upgrade functionality, allowing for continuous testing and major function checks. 🚗
• C-samples are fully functional prototypes, important for validation and pre-series testing. 📏
• D-samples, comparable to C-samples but supplier-provided, focus on design release and pilot production. ⚙️
• Each prototype level increases in maturity, functionality, and testing scope. 📈

Overview

Prototyping in the automotive industry involves several stages, each represented by samples labeled A, B, C, and D. These prototypes help in showcasing incremental improvements in functionality and integration for test vehicles, guiding the development from initial designs to production-ready versions.

Starting with the A-sample, which is a very basic prototype with limited features, the process advances to B-samples that contain all major functions, allowing for a thorough testing phase. C-samples bring about full functionality meaning they are ready for validation and pre-series tests, manufactured with the actual production tools.

Lastly, D-samples come from suppliers and are essential for the design release process, marking the final steps before full production. These samples ensure every piece is ready for mass-market release, completing the cycle of careful development in automotive prototyping.

Chapters

• 00:00 - 00:30: Introduction and Overview of Samples The chapter introduces the concept of prototypes, referred to as samples A, B, C, and D, in the automotive industry. These prototypes represent an incremental improvement in functionality and support integration with test vehicles.
• 00:30 - 02:00: A Sample This chapter discusses 'A Sample', referring to a first-level prototype that possesses limited and defined characteristics, making it low in maturity. It supports partial drivability, meaning it may or may not be installable in a test vehicle for testing purposes. It is suitable for preliminary investigations, allowing users to see, touch, and examine the sample.
• 02:00 - 03:30: B Sample The chapter titled 'B Sample' discusses the limitations of certain functionalities, emphasizing their restricted capabilities. It mentions that these functionalities are not appropriate for continuous testing needs. The text also highlights that prototypes may be presented in a simulated environment to demonstrate their capabilities. The importance of having a sample for testing purposes is briefly touched upon.
• 03:30 - 06:00: C Sample The chapter discusses the importance of confirming product dimensions with the customer and representing basic feasibility to identify any possible deviations from specifications. It emphasizes verifying product characteristics against the specifications and determining the necessary reference documents for this verification process.
• 06:00 - 08:00: D Sample The chapter titled 'D Sample' discusses the steps taken to verify a product sample. It begins by stating the importance of consulting the product specification to understand the defined characteristics. Following this, one must review the measurement report. The third step involves examining the media compliance report, and finally, the functional report must be assessed. The chapter notes that because the product offers limited functionalities, verification should focus solely on those functionalities. It briefly introduces the 'B Sample,' which is suggested to offer a little more than the 'D Sample.'
• 08:00 - 10:00: Conclusion The conclusion chapter discusses a 'b sample' product which is more mature and offers basic functions. This product can be installed in a test vehicle and supports continuous testing. It is noted that this product is manufactured using pilot or auxiliary tools.

A, B C, D Samples in Automotive Transcription

• 00:00 - 00:30 hey hi welcome back to the series of automotive basic sessions i'm dota krishna hema your automotive expert today we would like to discuss about sample a b c d in automotive industry so what are these samples these samples are nothing but prototypes which are under development which exhibits an incremental functionality improvement and which supports integration with test vehicles what is
• 00:30 - 01:00 a sample a sample is a first level prototype with limited defined characteristics so it is low in maturity level and it supports partial drivability that means you can you may or may not install in a test vehicle under test okay and it is fit for preliminary investigations that means you can see touch look
• 01:00 - 01:30 and you can sense it you can feel it you can ha limited functionalities will be will be there so like you can test only with respect to that limited functionalities and it is not suitable for the continuous testing so this prototype may also be shown to you in simulated environment also okay and why do you require this a sample like to get it
• 01:30 - 02:00 confirmed from your customer on its dimensions on the product dimensions and representation of the basic fund basic feasibility to define possible deviations to the to the specification so you will have a set of characteristics in product specification right so if you have to verify is there any deviation with respect to it kind of okay uh what all the documents with what reference you can
• 02:00 - 02:30 say this is deviated okay uh so or you can verify the product a sample okay then first of all you have to look into the product specification for the characteristics defined the second thing is measurement report you have to look into the third thing is media compliance report and fourth one is functional report since it is offering limited functionalities you can only check for you can only verify for those functionalities only so what is b sample b sample is little more
• 02:30 - 03:00 mature when compared to a sample it offers basic functions for uh functions and it offers like you can install this particular product in your test vehicle and you can test it it supports continuous testing as well so here this particular b sample product will be uh will be manufactured using pilot tools or auxiliary tools
• 03:00 - 03:30 uh so dimensions and dimensional function according to the specification is there or not you can verify yb sample b sample is for verification purpose and confirmation and proof of key functions so here it supports so in a sample you will have limited functionality but in b sample all the major functions will have that will have so you will check all the major functions are there or not you can verify
• 03:30 - 04:00 okay and how can you verify with respect to this characteristics which are specified in the product specification measurement report material report okay and fourth one is here you will have a better functionality when compared to ah sample or else all the basic functionality or must have functionality will be supported by v samples so those all can be tested right now what is c sample c sample is
• 04:00 - 04:30 a fully functional product like which is manufactured with series production tools wherein b sample is manufactured with auxiliary or piloted tools but we but see sample is with the series production tools like series um series linked tools like which may go for a qualification in the next step kind of so the deviations from the
• 04:30 - 05:00 specification uh may be permitted and and shall be documented so generally these deviations won't are are minute uh so if there is any such kind of deviations are there then we need to document it uh for the reference here uh this cmk or machine capability index should be greater than 1.33 your machine capability index is nothing but without
• 05:00 - 05:30 any hindrance like how many how many pieces or how many product products you can you can manufacture kind of in them in the same machine without intense it's a continuous uh continuous production kind of without any hindrance okay and why the c sample c sample is first validation purpose validation production test it supports production tests and it supports pre-series tests in it
• 05:30 - 06:00 supports ppf also production preparation series form also and how can you verify it you can verify the c sample also in the same way as as compared to the a sample and b sample the characteristics of product is defined in uh product specification you can verify as per product specification your measurement report your material compliance report and the functional report functional report here you can verify the complete functionalities of
• 06:00 - 06:30 the of this particular product so what about d sample so we have completed a b c by c sample you did validation so why do we require d sample d sample is uh is from suppliers okay d sample is provided by suppliers for the purpose of design sample release okay similar to c sample in oems in terms of oems okay full it is
• 06:30 - 07:00 fully fully functional like c sample in oems so manufacture with series production tools and series material series equipment is linked and qualified where in c sample you don't have uh the linking will happen but qualification is not mandatory there but here the qualification also will happen okay your machine capability index is greater than 1.67 why is why this resample d sample is for pilot production is to run run and rate it okay
• 07:00 - 07:30 and to no significant production run so how can you verify d sample d sample you can verify with the characteristics which are specified in the product specification ppac processor or a production part approval processor and ppf procedure that means product and process release form as per vda and validation which has not completed so
• 07:30 - 08:00 i have completed this topic if you have any doubts you can write back to me at ask hey marthota gmail.com thank you so much for your time