Blogs
Wafer QA/QC After Slicing And Polishing
Wafer QA/QC After Slicing And Polishing Semiconductor Wafer Qa/Qc After Slicing And Polishing Surface Description Introduction: When wafers are sliced up with wire saws, they are measured to make sure they are within the specified thickness, with minimal bow, warp, and TTV. After initial measurement, they are sorted and sent for polishing. Since polishing removes material and smoothes out the rough surfaces they need to be measured again to ensure they meet thickness guidelines and quality standards. Solution: MTI Instruments manufactures multiple systems to perform thickness measurements. From semi automated Proforma [...]
Mobile Devices
Consumer Electronics Mobile Devices Dimensions Description
Oil Film Thickness Measurement
Oil Film Thickness Measurement Automotive Oil Film Level Description A top marine engine manufacturer commissioned MTI Instruments to design and manufacture a non-contact sensor to measure the microscopic oil film layer between the engine cylinder wall and the piston ring. Engine testing is normally performed through a range of low RPM's to high RPM's (400- 6000) with piston linear speeds approaching 500 inches/second and at various torques. A measuring system with high frequency response and small sensor size was essential to keep engine machining to a minimum while not altering the [...]
Sheet Metal Monitoring
Sheet Metal Monitoring Automotive Sheet Metal Monitoring Thickness Description Introduction: When sheet metal is formed in a continuous process it needs monitoring during the actual feed prior to machining or forming to prevent defects and scrap.  One way to accomplish this is to use a laser sensor to measure the thickness. Problem: A major electrical equipment manufacturer needed a way to monitor the incoming material just prior to shearing and forming. The device needed to be robust, non-contact, reliable, accurate, and fast. The client would be using their data acquisition [...]
Robotic Weld Inspection
Automotive Robotic Weld Inspection Presence/Absence Description
Thermal Expansion On Automobile Engine
Thermal Expansion On Automobile Engine Automotive Thermal Expansion On Automobile Engine Dimensions Description For years the sole purpose of the oil pan was to act as a reservoir for the engine lubricant. Some modern engines now utilize the pan as a structural component. It is machined from a rigid steel or aluminum casting and designed to support the lower portion of the crankshaft bearings and rear main seal. This development has introduced a potential problem area that must be analyzed. As engines go through heating and cooling cycles it is [...]
Tire Tread Inspection With 1D Laser Sensor
Tire Tread Inspection With 1D Laser Sensor Automotive Tire Tread Inspection With 1D Laser Sensor Depth Description Tire manufacturers wants to satisfy their customers, and protect themselves from liabilities, manufacturers are moving to 100% tire inspection for defects and abnormalities. Defects not only cause potential safety issues but they can also introduce unwanted vibration into the vehicle suspension system. Belts can be overlapped, or not cover the complete tire surface, causing weak or bubbled areas and imbalances. The tread depth can be too shallow, leading to decreased service life. An [...]
Torque Converter
Torque Converter Automotive Torque Converter Surface Description Since minute defects in the torque converter casing wall thickness can result in unacceptable and dangerous torque converter expansion, a precision measurement system was needed to measure the impeller hub displacement and thus the torque converter axial displacement. An AC dynamometer would be required to spin the torque converter at a high rate of speed while a fast response hydraulic system is needed to pressurize the converter to pressures up to 150 psi. MTI’s MicroTrak laser sensor was selected because it offered a [...]
Door Gap
Automotive Door Gap Tolerances Description
Brake Rotors Thickness Variation
Brake Rotors Thickness Variation Automotive Brake Rotors Thickness Variation Surface Description Introduction Driving cross country or cross town, we give little thought to the operation or complexity of our vehicle braking systems. They only cross our mind when we absolutely need them; we never stop to think about the extensive design and testing that makes them such a lifesaver. Take the brake rotor for example. Under normal operating conditions it's subjected to extreme temperatures and forces, which can cause rotor distortion and potential failure. To make certain it can withstand these [...]