There is no one article that covers this. as to strength of materials they are covered in engineering books. There are also books on welding inspection to meet American Welding Society specifications (pressure vessels and pipe certification). But these are all technical and are not for an end user generally. You can Google Brazing, and Soldering but in general
Properly brazed joints can be stronger than the pieces being joined, but are not as strong as welded joints. Brazing also has minimal effects on the two metal parts. Soldering is a low-temperature analog to brazing. ... The bond is not as strong as brazed joint or welded one.
Just like with a pressure cooker, the higher the pressure the hotter the temp inside the pot will be to cook food faster. The standard soldered radiator will be rated at only 10 to 12 pounds. But you can buy a 16 to 24 pound pressure cap (often smaller in size to prevent use on a soldered radiator) for your aluminum radiator to raise the operating temp before your coolant boils.
All fans (even electric fans) require a shroud to duct the air through the fan off of the radiator. Radiators cool best with a fan behind the radiator pulling air through at idle while allowing air to flow through when the car is moving down the road.
Most people don't even think about it, but an electric DC motor becomes a generator if it is driven (by wind through a fan for example). As the RPM increases with the cars forward speed it results in a higher than nominal voltage in the fan power circuit, Without diodes and resistors in your fan control circuit, you can fry any sensitive digital equipment installed such as a HEI distributor, or a CD ignition box, or an engine control unit (computer) for EFI, or even your prized stereo boom box and amp.
Engineers trained in the sciences think of these things, but not all back yard mechanics have the level of training than an engineer has, so they don't. They just go on line and complain about what a rotten product "X" is because it died on their first test drive after installing some big electric fans.