in my case, i've found two batteries at costco each for around $90 total with 3 year warranty (the same length as the longest warranties at autozone/o'reilly's) and manufactured by johnson control electronics, the same manufacturer as die hard batteries and duralast and most of the batteries sold at walmart, pepboys, etc. i've had a membership for years but it took me almost two decades to realize i wasn't taking full advantage of it because i've been buying $240 batteries and since warehouse stores are all over the place, you'll still be able to service it in many states.
Hello, people of r/PlantBasedDiet. I'm trying to make a comprehensive list of companies and organizations that focus on wfpb nutrition and evidence that they work on chronic diseases such as diabetes and cancer. I'd also be glad to receive the names of any companies that were featured in a documentary or short movie.
An example can be this.
Thanks in Advance.
Decided to call it Lay Techs.
Introduced: Sponsor: Sen. Amy Klobuchar [D-MN]
This bill was referred to the Senate Committee on the Judiciary which will consider it before sending it to the Senate floor for consideration.
I would like to design a bicycle frame using composite theory and structural theory to do FEM analysis on it. As for manufacturing I think I can make it using foam-core composite cylindrical shells, which I've been reading up on. I can shape foam into tubular shapes and lay it up with carbon fiber via vacuum bagging. Using foam also opens room for innovation in the design.
I practiced design and theoretical analysis of a bicycle frame using HyperMesh and Optistruct. Of course, I need to couple it with a sound theoretical understanding of composite theory and structural analysis (garbage in=garbage out).
I did a literature review on FEM modeling of bicycle frames and am now reading up on foam-core composites, etc. I also have some book PDFs on composite theory.
Theory Classical composites theory Composite cylindrical shell theory [Buckling of Bars Plates and Shells RobertMJones] Can it be simplified as plane stress, or do I treat it as a shell? Justify. Structural analysis
Computer analysis Software: MATLAB, HyperMesh/Abaqus, OptiStruct Structural analysis of frame using HyperMesh Structural analysis of simplified sandwich beam Optimize Layup with Optistruct ABD matrix on MATLAB Tsai–Wu failure criterion on MATLAB and HyperMesh
Design Design for manufacturing. Justify design, Hypermesh evaluation. Based on theory, what other people have done, and creativity
Experimental Analysis Bending, tension, compression of individual tube structure Test joints between tubes. Apply loads on bicycle Take it for a ride down steps
Manufacturing The bicycle frame tubes can be individually made by vacuum bagging a carbon fiber layup around a hard foam core, creating a cylindrical sandwich structure with an orthotropic core. The foam core (can be shaped using a foam cutting wire) according to design requirements. This should be advantageous in designing tubes with varying cross sections (thicker bottom bracket), as well as an asymmetric rear triangle. If this is infeasible, tubes can be bought, although it would take away from the design aspect of the project.
The tubes are positioned relative to one another on a jig. Bicycle hardware such as Bottom Bracket, head tube, and dropouts are held in position. Tubes and hardware are joined with carbon fiber. [paper on metal-CF interface, paper on joints]
Frame Material
Foam
Carbon fiber
Epoxy
Bicycle hardware (bought or from old frame I have)
Rough Estimated Cost $200 Foam (Divinyce
... keep reading on reddit ➡
I've toured a number of manufacturing plants and am blown away by the number of separate pieces of large machinery that are used in some facilities. I imagine this is a lot to take in for someone on their first day, how do new employees learn the ropes? How long does it take to become comfortable working with a unfamiliar piece of machinery without assistance? It all seems very daunting, especially when one mistake could cause serious injury or damage to expensive equipment. Any stories you could share about how training is handled in the industry?
We've built an AR knowledge sharing platform called Manifest that runs on the HoloLens 2 and Magic Leap HMDs to make the process of learning much, much easier. We can quickly turn written operations manuals into step-by-step instructions with quick-captured FPV videos and pictures, PDFs, 3D ink, shapes and models that hover over-top of existing equipment. It's all hands-free so you can work with your hands at the same time. I think this could have a huge impact for the manufacturing sector but seeing as I've never worked on a manufacturing floor, I need some insight on where this could be most useful.
If you want to see Manifest in action, here's a video of me creating a shutdown procedure for a 400 amp substation in about an hour, we've got a bunch of other videos up on our Vimeo as well. https://vimeo.com/375979238
