Engineering Stack Exchange
Engineering Stack Exchange

Questions tagged [joining]

Use this tag when asking questions about joining/fastening/affixing items together by means of various joining processes like: mechanical fastening,joining by fusion,solid-state joining etc.

26 questions
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11 answers

Affixing a thermocouple to a surface

I'm looking for advice on how to attach a thermocouple to a metal surface in a fashion that's relatively temperature resistant (more-so than) glue. I've got some very fine gauge wire on hand to make the thermocouples and specialized spot welder…
Dan
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3 answers

Bonding Semiconductors to PCB

I'm trying to bond semiconductor samples (Si and Ge) area ~1-2cm^2 to fiberglass printed circuit board (PCB) We use West system marine epoxy for other things. 105 resin 209 hardener (long cure time.) So that's what I used. (mixed at standard ratio)…
George Herold
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6
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3 answers

Mounting and Coupling an Encoder

I was wondering how to mount a small rotary encoder to a platform in order to measure how far a small treaded robot has traveled. We're using this tread/wheel set: We've tried epoxying the encoder shaft directly to the end of an extra gear wheel,…
rasz
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4
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1 answer

How does a union joint with two male threads work?

How does union joint with two male threaded ends work? Does one male end rotate 360 degrees around it axis? How is the inside of the union constructed? Can I connect two pipes with female threads using a union joint and assemble/disassemble it…
Sysrq147
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3
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2 answers

Overcoming limitations of a snap in joint

I have a medical device I am designing which will lie under the patient bed. I need to add a "connector/joint" on this device to permit the attachment of some consumable. Here is a quick overview of the process: Blue part is low cost injected…
Nicolas Goy
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4 answers

What type is miter joint - Welding

Is miter joint in welding - butt joint or corner joint ? My example includes 45 degrees miter (90 degrees) angle on two SHS (Square Hollow Sections) - 50x50x3 [mm] Working with EN/ISO norms regarding welding and joint preparation. My opinion is…
Sysrq147
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2 answers

What is a good method of creating a pivot point between flat metal bars?

I could use a hand choosing the mechanism for joining the ends of 2 flat metal bars (each around 3/4" wide and 1/8" thick) so that they pivot freely but without play. What I'm currently planning is to drill a 1/8" hole in one and a 1/4" hole in…
uncaged
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2 answers

Consumable arc welding Polarity Effect on heat input

why DCEP is generally used in consumable welding process? As per my understanding more heat is generated where the electrons collide(anode), so in consumable welding,we want deposition and also want penetration, DCEN would give more heat at the work…
Crazy_Court651
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Achieve mechanically water tight snap-in-place joint

I'm not sure how to ask it but i'll try I want to 3d-print 2 half spheres with a screw cap that then can be clipped once (can't un-clip later) And can be filled with water (lets say its food safe, i'll also coat the internal to waterproof it) So,…
Simon
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1 answer

Recommendations on a rigid connection between materials

I am trying to construct a torsion pendulum/balance for a physics experiment but the research papers are always missing specifics on how the certain connections are made. I am looking for recommendations on rigid connections for: How to attach a…
axawire
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How to calculate properties of a thread?

I have a simple thread joint between two objects: and want to find a size of those threads so that after rotating male part it stands at the specific angle. For those who is curious I made it in Fusion 360 and added joints to these parts, also…
Turkhan Badalov
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Is it beneficial to add a non-conducting washer when using stainless fasteners on an aluminum structure? (galvanic corrosion vs reliability)

I plan to attach some aluminum (6061) to an existing aluminum chassis of a trailer (vehicle), using stainless steel bolts, washers, nuts. The vehicle will be subject to road spray and weather. I'm aware that galvanic corrosion could occur, but is…
tom
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What is the ideal angle for a timber (scots pine) sliding dovetail?

I am considering using a sliding dovetail joint (without glue) between two timber pieces: a vertical wall with a slot and a horizontal shelf with a tail. The thickness of the shelf is $h_1 = 18mm$, and the thickness of the wall is $h_2 = 25mm$ or…
Charlie
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Question regarding the formation of joined interface, visualization with the help of simulation at particulate level

I am working on the micro and nanoscale in a non-scientific sense; it's like mixing a bunch of red and blue marbles in a jar. I want to see the movement of molecules across the interface for the input of heat flux or temperature-like conditions I…
Sergeant Afanasiev
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1 answer

Finding out different phases and microstructures within an interface, of joined components

I had a query regarding identifying phases and other components formed within the joined interface. I have read some papers from the SEM analysis, but the procedure for how they will finally analyze the results is not mentioned. Please don't be too…
Sergeant Afanasiev
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