Which risk significantly increases when welding high-strength steel reinforcement bars (rebar) on a construction site during cold weather?

💡 Explanation

Hydrogen-induced cracking (HIC) becomes more prevalent in cold weather welding because lower temperatures reduce the rate of hydrogen diffusion out of the weld metal; therefore, hydrogen remains trapped, increasing HIC risk, rather than diffusing out to avoid brittleness.

• Which outcome occurs when rapid LED cycling exceeds thermal capacity?
• Which risk increases when an aircraft experiences prolonged flight in supercooled large droplet (SLD) conditions?
• Which outcome occurs when hydrofluoroolefin (HFO) refrigerant leaks into a Positive Temperature Coefficient (PTC) heater?
• Which outcome occurs on a CNC lathe when the toolpath exceeds rapid traverse limits?
• Which risk increases when ultrasonic sensors on autonomous underwater vehicles (AUVs) experience acoustic interference?
• In optical communication, which consequence results when chromatic dispersion is uncompensated and bit rate increases?