This is a life savior lecture! Well as the rest of your lectures! Thank you so much.

@paulallen5321

3 жыл бұрын

Glad it was helpful!

Thank you, in 3 months I'm going to be working on the formulation of jerky... it's a mixture problem.. this helps thinking about it as a ccf surface doe and then rerun the numbers for volume... great George Block quote..." All models are wrong"...

@paulallen5321

4 жыл бұрын

Hope your Jerky DOE is going well - If want more information on my DOE approach I've just released a new book... ' Design of experiments for 21st century engineers' you can get it from LULU.COM

Hi Paul, you have very good material, I am process Engineer and I'd like to learn at the highest level the skills required, what are the books that you have?, could you please share them to me?, for you what are the skills required in strong level?, best regards

@paulallen5321

Жыл бұрын

Hi Exito - Good to here from you. Here are some links... Drink tea and read the paper - www.lulu.com/en/us/shop/paul-allen/drink-tea-and-read-the-paper/paperback/product-1v474jqr.html Design of Experiments for 21st Century Engineers - www.lulu.com/en/us/shop/paul-allen/design-of-experiments-for-21st-century-engineers/paperback/product-124en77d.html and you can try my yellowbelt course, here is the link.. paul-allen.mykajabi.com/offers/ML2ac3iJ

Great explanation sir! Can I use the traditional DOE to evaluate the best concentration of chemical components in a mixture? I'm assuming that I can keep the final volume constant by using different concentrations. If so, how that is more suitable than the Placket Box method for five or more variables?

@paulallen5321

8 ай бұрын

Hi Prof - great to hear from you, no if you want to keep the volume constant then you will have to run a mixture design. But if you let the volume move then you can you PB and Box designs...

Paul, I have read your DOE book, found it very practical and useful. i work with complex chemical formulations. These are mixtures of additive chemicals to control multiple performance parameters such as oxidation, friction etc. Do you have any recommendation to read about DOE applications on formulations. Your recommendation using screening design and modeling designs are very helpful a lot of times.

@paulallen5321

3 жыл бұрын

Bomcimtube - good to hear from you. As you've watched the video you know my approach to mixtures. Which works really well. If you send me a mail (paul.allen@allenp.co.uk) I'll pass on some extra information that I was given by my DOE mentor. Also George Box is the man that invented mixture designs and used DOE alot in chemistry. So any book by box might have what you're looking for. I have a book by Box, Hunter and Hunter that I think contains mixture designs...If you need any more help let me know...

Dear Paul, thank you very much for the videos, they're really pedagogical and insightful. I would like to ask a really small question: The mixture design is useful for formulation. Surface response & factorial usually are in turn used when varying process parameter. What would it be the best way of dealing with a case in which you need to change both process conditions and formulation? Have you done this in other videos or books of yours that I can refer to?

@paulallen5321

2 жыл бұрын

Hi Julian - personally i view that as just one big DOE and I would look to use a screening DOE from Taguchi L12 or L18. Or maybe you just have to do 2 seperate DOE's. As I like to keep saying, it's the cheapest products you'll ever make...

@misticoj

2 жыл бұрын

@@paulallen5321 Thank you for your reply. My idea was also carry out two separate designs, but I look into your material to better understand the Taguchi possibility. Thanks again for your straight-to-the-point explanations and videos.

Thanks I got answer for my question

@paulallen5321

3 жыл бұрын

Hi Gaurav - yes you'll have to let the ultimate cement mix weight vary to avoid a mixture design. Using this methods though can mean the model is curved. So those centre points will be useful when you run them. There is a video about running centre points. Let me know if you can't find it....

Hi Paul, that's a great video. I hope this question isn't too forward but I wondered if you or would anyone you know might be able to offer me some paid mentoring in DoE? I'm fairly experienced in full and fractional 2-level factorials but looking to take it to the next level (become competent with the basics of RSM and be able to understand topics like rotatability). I live in Fife, Scotland. I'll check out your new book.

@paulallen5321

4 жыл бұрын

Edin drop me a line on paul.allen@allenp.co.uk and we'll see what you need and how I can help..

Dear Sir, thank you for responding and making DOE easier. I would like to share with you my experiment objective and details to have your advice (by email). If possible it will be my pleasure.

@paulallen5321

4 жыл бұрын

Rajaa - Just published a new book on DOE. Design of experiments for 21st Century engineers you can get it at LULU.COM