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Questions tagged [industrial-engineering]

Questions for this tag may be for improving processes or finding an efficient way to complete a task.

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10 votes
4 answers
28k views

Why does the stress-strain curve decrease?

This is a stress-strain diagram I have noticed that the curve decreases between points C & D and between E & F. Why does that happen? I expected the curve to always increase since the ...
Eman.suradi's user avatar
6 votes
2 answers
374 views

Pipe seized to inaccessible coupling - how to attach a new pipe?

A friend of mine that doesn't use the internet much runs a commercial laundry. They use an old 'Manlove Tullis' laundry calendar (c. 1980) that looks like this: (click to enlarge photos) ...
Danny Beckett's user avatar
5 votes
4 answers
433 views

How to compare utilization rates?

I have the utilization rates of several machines for each week over a year. These differ per week because of the occurrence of machine failures and changes of orders. Meaning that one week a machine ...
user78820's user avatar
5 votes
1 answer
221 views

Is it possible to make very large diamonds using a pressure vessel at several GigaPascal pressure?

Nanocrystalline diamonds can be synthesized by direct conversion of graphite or carbon black mixed with low amount of boron (0.1%-10%) at 8-10 GPa, according to US patent No.20120255236. If some ...
anameen's user avatar
  • 51
4 votes
4 answers
531 views

How to fairly distribute items when there is more demand than supply?

I have these 2 problems to solve (on the image). I have 9 stores that want different quantities of a product. The first store asked for 62 units, the second one 10 units, etc etc. The supplier sent ...
Pat's user avatar
  • 57
4 votes
1 answer
186 views

3D construction [closed]

Can someone please tell you what to start with to construct a Kids Bike Trailer as 3D. It should select material and geometry. I think I should start sketching with forces (children's weight) and ...
Zouhir Bensebban's user avatar
4 votes
1 answer
51 views

silicone injection molding - making a flexible ring

I am working with silicone injection molding as a hobby and I am wanting to make a ring. I have tried with 100% silicone and the results are a clear ring that is not quite the consistency I want. I ...
SwimBikeRun's user avatar
4 votes
1 answer
12k views

How to bend copper heat pipes?

I have purchased these copper heat-pipes; however, I am wondering how to bend them without kinking them or cutting them open due to pressure on weak points/bends. These are flat copper heat pipes, so ...
user avatar
3 votes
2 answers
489 views

Check valve in compressed air pipe network?

I am working on a building that would like to used compressed air for some pneumatic actuators. They would like to bring the air in from an adjacent building that has more than enough capacity, but ...
Secundus's user avatar
  • 571
3 votes
1 answer
65 views

How to specify the quickest movement a human can do based on MTM standards?

I am looking for a benchmark as a reference regarding the human Kinesiology that specifies the quickest movement a human can do on basic everyday movements like computer mouse clicking. As far as I ...
Remy's user avatar
  • 41
3 votes
2 answers
544 views

Stability issues in gateleg table design

This is a table with two wings that fold down, and two legs per side that swing out for support. I'm pretty confident about this design being stable: The green section at the top is the only surface ...
Geraldo's user avatar
  • 31
3 votes
0 answers
1k views

How do I EXACTLY calculate the k-factor for metal bending?

Introduction I've recently started to work with metals and the process of bending them. There is a lot more math involved than I initially thought. All the break press operators just have a ...
Kapfy's user avatar
  • 31
3 votes
0 answers
83 views

What kind of professional(s) build/design factories? [closed]

I have a small self-built food processing unit (500sqft) but it is very labor-intensive. I want to make a larger unit (45,000sqft) with 100x more output using factory machinery (automation, conveyor ...
Samid's user avatar
  • 155
3 votes
0 answers
33 views

Waste Foundry Sand as an aggregate for concrete mixes. I have a question regarding grain diameter and it's possible applications

I'm working on a project with a company that uses sand casts during moulding processes and they provided us with samples of the sand they use before it's involved in the procedure and afterwards (...
Jorge Cabezut's user avatar
2 votes
1 answer
93 views

What can be the mechanism used in devising a machine that can arrange the dishes properly to make the cleaning faster in the messes/hotels [closed]

In hotels/messes the used plates are often placed haphazardly, and the workers need to pick the plates carefully to clean them. This leads to longer washing times and longer waiting times for ...
John's user avatar
  • 87
2 votes
2 answers
93 views

In the 1980s, did radio reporters actually carry around a clunky antenna contraption on their backs to communicate with their radio station's HQs?

I've been wondering about this ever since I saw this comedy TV show as a kid called Macken ("The car repair shop" in Swedish). Originally aired 1986 in Sweden, it features absurd situations ...
Maximili Tyrone's user avatar
2 votes
2 answers
179 views

Coating brass components cheaply

I have seen a number of products made of brass with a silver-looking coating covering the brass on the outside. These products are all quite cheap (for example a small watering can or clothes hooks). ...
user1636588's user avatar
2 votes
1 answer
107 views

Recommended compressed air source and location for separate air compression system

I am investigating what would be the most appropriate compressed air source (fan/blower/compressor) for designing a separate air compressor system. The information is as follows: the compressed air ...
udidosa's user avatar
  • 161
2 votes
0 answers
40 views

Manufacturing with glass panels [closed]

I would like to design a 3.2-inch LCD display onto a product. The best aesthetic I have seen is using a flush glass screen front face. My product does not use touch screen. How would I go about ...
monkey's user avatar
  • 196
2 votes
0 answers
70 views

Does a closed loop biomass-fired cogeneration/CHP make sense?

I'm working on a project concerning electricity production using biomass, and we have seen that making use of cogeneration is very attractive in order to increase the efficiency of the installation. ...
Gonate's user avatar
  • 161
1 vote
1 answer
61 views

Replace Hydrogen in an air cylinder

Can we use a gas cylinder made of A6061, meant to carry air up to 300 bar, with Hydrogen up to the same pressure? If not, what is the maximum pressure that one can safely use hydrogen with?
AkhilMadem's user avatar
1 vote
1 answer
59 views

FE Exam practice: "How many years until you're a millionaire?" [closed]

One of the early questions in the NCEES FE Industrial/Systems Exam studyguide has a solution that I can't decipher. The question is as follows: ...
Goblin Guide's user avatar
1 vote
2 answers
90 views

Which design to maximize friction for a device standing on concrete?

I have a device 4cm X 5cm X 15cm that stands on asphalt/concrete/road. So, the device is taller than its base which makes contact with the asphalt. I want to maximize the friction so that the device ...
gregoiregentil's user avatar
1 vote
1 answer
70 views

How can the function of a separation funnel be accomplished industrially?

In some industries, as in biodiesel production, upon reaction, there will be several products with different properties (density) generated inside one chamber, and it's crucial to separate each of ...
gardin's user avatar
  • 43
1 vote
1 answer
94 views

What are the charge/power connector of restaurant order pagers / buzzers called?

They look like snap buttons and used for stacking pagers for charging. Closest things I can find are socket screws and cap nuts.
Chris Gunawardena's user avatar
1 vote
1 answer
558 views

Modelling reactor jacket with or without insulation, how to proceed?

I am currently trying to derive a model to help estimate as precisely as possible how much time can be saved by insulating the jacket of a reactor used for eating and cooling. EDIT: I edited my post ...
ParaH2's user avatar
  • 123
1 vote
2 answers
127 views

Analizing Vibrations Influence on Dynamic Weighing

I have a very sensitive scale used for dynamic weighing (by dynamic I mean that the scale and load cells are actually beneath a belt conveyor that actively weight product when it´s being transported ...
spe4ker's user avatar
  • 409
1 vote
1 answer
727 views

What are SCADA Boxes?

I've seen the terms "SCADA boxes", "SCADA out-of-the-box", "SCADA turnkey systems" used in various articles but without a definition. I'd like to know whether the terms are synonymous and if not what ...
JDM's user avatar
  • 113
1 vote
2 answers
100 views

Folded/bent sheet steel design

I'm coming from the software engineering world (please don't rip me to shreds here), and I'm somewhat unfamiliar with the manufacturing process when it comes to cut and bend steel. To provide broader ...
JP Silvashy's user avatar
1 vote
1 answer
128 views

Distance sensors with accuracy of 0.1 mm?

I am looking for a sensor with 0.1 mm accuracy and a sensing distance of 1-10 cm for an industrial machine. The machine is used to ensure product quality following the assembly process. It will be ...
Emre's user avatar
  • 11
1 vote
1 answer
48 views

Is there a good resource to find out if an industrial controls component is branded by more than one company, and who actually manufactures it?

I have seen multiple components such as relays, circuit protection, plcs, terminals blocks, and even enclosures that were sold by completely different companies. Other than the writing on the device, ...
Andrew Locke's user avatar
1 vote
1 answer
108 views

Planned cycle time for manual manufacturing processes with high variability

I am in a factory with many manual (non-machine) operations. Process time variability for most operations is high, leading to highly variable cycle times at the part level. There are efforts to ...
gtm's user avatar
  • 11
1 vote
1 answer
258 views

Arrow on Activity (AOA) Network Diagram

I have question-related to industrial management, actually, it is a problem on arrow on activity network diagram. I tried to solve the question my self, below are the images. If I did any mistake ...
Saad Zahoor's user avatar
1 vote
1 answer
39 views

From advanced prototype to low-volume production

So to the point. In our project (Robotics project) we mostly use sheet metal and PLA printed parts to build. But we want to level up and be ready for an advanced run and even low-volume production of ...
user4978484's user avatar
1 vote
1 answer
54 views

AirFlow Measurement

I'm a software developer, who wants to create a monitoring system for an industrial airflow system. The airflow of the system is huge - between 15 and 20 cubic liters per minute. Here is my problem, ...
Георги Няголов's user avatar
1 vote
3 answers
109 views

Metering pump that is either computer compatible or microcontroller compatible?

I'd like to write something in Python to automate and maintain a specific dosing formula for a couple of our processes. We need a dosing pump that either has a USB port that can interact with a ...
Zub's user avatar
  • 19
1 vote
0 answers
54 views

Examples of uses of different voltages as seen on motor nameplate

The electric motor nameplate (pictured) has a variety of different voltage configurations which are listed. I understand that the motor can be configured to run on different voltages by changing the ...
hamslice's user avatar
1 vote
0 answers
339 views

Optimizing flue gas temp for maple syrup evaporator

I have a simple maple syrup evaporator. Fuel is burned in a firebox located under 1mm stainless steel pans containing maple sap--which becomes syrup once enough water is evaporated. After passing ...
Asa's user avatar
  • 11
1 vote
1 answer
100 views

Ceramic pressure measurement - piezoelectrical or capacitive?

Context: I'm writing about an old industrial training facility used for a petrochemical process. In this training facility, there is a 3-phase separator. On that separator is a pressure measurement. ...
A. Kvåle's user avatar
  • 121
1 vote
0 answers
25 views

What constitutes AGILITY where Behavior-Driven and Unit Testing are concerned [closed]

This morning I had a presentation on PHPSPec which the official website describes as follows: A php toolset to drive emergent design by specification. As defined within an adjective context the ...
scruffycoder86's user avatar
1 vote
0 answers
41 views

Required clearance for moving part (Push Button)

I'm designing a push button made from most likely ABS but possibly TPE, it presses a surface mount button on a PCB with 0.9mm travel. The ABS button is 8x8mm Square and travels through 4mm of ...
Newbie Noob's user avatar
0 votes
2 answers
87 views

PID or AI or other approaches to this thermal control problem?

I have this boiler controlled manually at the moment, and I am wondering what would be the most proper approach to automate this process. The boiler in this question basically burns fuel (saw dust, ...
Dave's user avatar
  • 101
0 votes
1 answer
130 views

Manufacturing screw thread onto lid

I am wondering how the screw top of a container made of either aluminium or brass is manufactured at scale. A picture of the sort of thing I am talking about is below. Currently the only method I can ...
user1636588's user avatar
0 votes
2 answers
653 views

Use of iron oxide as surface cleaning agent

Metal oxides are hard in nature, that's what my professor says. Technically Iron oxide is a metal oxide and must be hard. Then is it used in industries for surface finishing operations like buffing?...
Fennekin's user avatar
  • 585
0 votes
1 answer
2k views

Why isn't air added to the primary reformer in ammonia production?

Is there an energy related reason why, in the production of ammonia, air is not introduced in the primary reformer? In this case we don't need the second reformer. I could think of a few reasons like ...
Thomas's user avatar
  • 3
0 votes
1 answer
83 views

What is the technical term for a document that contains the results of a final test for a specific product?

Currently, I have to design a final test for a product. I want to summarize the results in a test report. The report is automatically generated and gives a summary (quantitatively) of which ...
JHK's user avatar
  • 1,618
0 votes
2 answers
65 views

Are the production lines for military vehicles (incl. tanks) automated (with industrial robotics) similarly to the mass-produced cars?

My country is participant in one military vehicle production product and the price tag is almost 5-10 times higher than for mass-produced non-military vehicles. We have no industrial robots for such ...
TomR's user avatar
  • 109
0 votes
1 answer
1k views

Calculate Vibration Velocity and Acceleration from Triple Axis Accelerometer

Looking for very specific support developing a simple Python script to take the time series X,y,z tuple readings from a triple axis accelerometer and output a meaningful measure of vibration for ...
Mindcycle.dev's user avatar
0 votes
1 answer
53 views

How come there is no home clean incinerator/burner yet?

I realized recently that burning waste oil, plastic, coal, even plain wood, release (potentially) harmful SOx, NOx, and particulate matter (wiki) That's why it's mandatory for incinerators / boiler-...
Lorenz's user avatar
  • 19
0 votes
1 answer
56 views

How to integrate a heater in polyeurethane foam?

We are trying to integrate a heater in polyeurethane mattresses. However, the heating units we found are in fabric shape and hence the moment we pressurize the PE foam in the mold they deform and do ...
MHH's user avatar
  • 1