Mistras Group
Corwin Worrell Resume

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State: NC North Carolina
Country: United States
Status:
I am willing to Travel.
Currently working but always looking.
I need a job as soon as possible.
I prefer permanent jobs.
Certifications
Basic Military Training
2A732 Technical Training
First Term Airmen Center
2A752 Technical Training and Career Development Course
CPR Qualified
Forklift Operator Qualified
Airmen Leadership School
2A772 Technical Training and Career Development Course
Unit Deployment Manager
Education
Diploma, Eastern Wayne High School, Goldsboro, North Carolina
Louisburg College 50 credit hours towards Sports Management Degree
University of Mount Olive 35 credit hours towards Sports Management Degree
Completed 40 hours of 64 hours towards Nondestructive Testing Technology Associates Degree
Experience
In my five years’ experience as a nondestructive tester in the Air Force I have gained skills & knowledge necessary to proficiently perform all methods of nondestructive inspection (NDI). I am capable to the highest degree of performing eddy current, ultrasonics, bond/composite inspection, radiographic inspection, magnetic particle, fluorescent liquid penetrant, oil analysis, and optical methods as well as interpreting the results of these inspection techniques I can use my numerous years of experience to decipher valid defects versus valid discontinuities. As a 7 level in NDI I am capable of prioritizing NDI jobs to best meet the mission. I effectively maintain shop equipment and tools; performing operator maintenance when applicable. I communicate the required aircraft/part preparations to the owning organizations as necessary for nondestructive inspections to be performed as dictated by technical orders and/or Air Force regulations. Examples would be having a part stripped, removing sealant from an aircraft surface, removal of panels or placing an aircraft on jacks. I also accurately communicate the status of inspections and estimated time of completion to the owning organizations. Part of this communication process includes written documentation on AFTO Form 350 and/or aircraft forms 781 as well GO81 and/or CAMS. Further documentation is performed in shop by logging inspections in aircraft folders and in a daily work accomplished logged. This documentation is necessary to allow fellow nondestructive testers to be aware of what has been accomplished on an aircraft or part. I coordinate with other shops to properly route aircraft parts/support equipment to their next location for required maintenance. I am able to contact different organizations when I encounter problems; for example if a stuck screw is discover during the removal of an aircraft panel I will contact sheet metal or if I cannot access an inspection area from the ground or on the aircraft I call aerospace ground equipment for a maintenance stand. I use the -6 technical orders series for the respective aircraft type to gather this information. I also used my written communication skills to develop flow sheets, and aircraft preparation procedures for new inspection methods. The tools and equipment I have used while performing aircraft NDI work are; eddy current units (Nortec 2000D, Nortec 2000D+), I am qualified to use eddy current oscillating bolt hole probe(Olympus minimite) kit, ultrasonic units (Krautkramer USN 52L, Krautkramer USD15S, Krautkramer USN 60), bond/composite unit (Sonic Bond Master), radiography system (Lorad), Fuji and Kodak film digital industrex core stream HPX-1 processors, X-rite densitometer, thermo lucent detectors (TLD), electronic pocket dosimeters (EPD), SM-400 portable survey meter, magnetic particle stationary unit (Gould-Bass Magne-tech), magnetic particle portable unit (Parker Probe),quick break tester, ketos ring, AS5282 ring, shunt meter, fluorescent liquid penetrant stationary unit (assembly line and tanks for processing), fluorescent liquid penetrant portable (method C aerosol spray cans), cracked chrome panels, blasted steel panels, black lights, explosion-proof portable black lights, & Lambino black lights, optical/visual inspection units; 10x magnifier, borescope, videoscope, stereozoom microscope, oil analysis (Spectro M, Spectro M w/windows). I am also familiar with the operation of B-1, B-2, and B-4 aerospace ground equipment maintenance stands as well as operating light-alls and power carts.
Eddy Current inspection method is used primary for detecting surface or near surface cracks in most metals. This method can be used on airframe parts or assemblies where accessible for contact with an eddy current probe. This method of testing is also used for conductivity testing and metal sorting. In my experience as an NDI technician when dispatched for possible crack verification using an eddy current unit I have found cracks resulted mostly from corrosion, stress from fastener holes, the bead seat of wheels will stress from routine landings and hard landings, and from parts that wear out over time. I utilized eddy current to inspect pilot seat structures on B-1 aircraft. When using eddy current unit I follow technical orders for set-up procedures and calibration of equipment in order to get the best inspections of the part being inspected. The majority of workcard requirements (these show routine area that need to be inspected during phase and isochronal inspections) for NDI on the aircraft are inspected using the eddy current method.
Ultrasonic method of inspection is used for detecting discontinuities in parts by utilizing high frequency sound waves transmitted through the part by using a transducer. This method of testing is acceptable for use when you need to detect discontinuities deeper into a part than with eddy currents. I have used ultrasonic testing to check for disbonds in composite and honeycomb structures on F-15 aircraft. I also used ultrasonic testing to check the integrity of KC-135 production breaks. While deployed I used ultrasonics to inspect B-1 aircraft.
Bond/Composite method of inspection is used for detecting delaminates and disbonds in certain structures, crushed core, and water entrapment. I have used the Sonic Bondmaster unit to as a mechanical impedance analysis test that signals when bonded structures are pulling apart or disbanding. Besides using a bond testing unit I have also utilized other NDI techniques to evaluate bonded/composite structures utilizing visual, tap test, radiography (used to evaluate water entrapment) and Ultrasonic.
Radiographic method of inspection is used for showing internal and external structural details of all types of parts and materials. I have experience and knowledge of radiography inspection of airframe parts and assemblies. In my four years’ experience working with radiographic inspections I have performed a multitude of welder certification examinations. I have used technical orders to aid in correcting exposure times and adjusting kilovolts (kV) and mila-amperage (mA). When evaluating film as an NDI technician the main areas of concern are to determine whether there is water entrapment, cracked ribs and other structural discontinuities. Film are also reviewed to determine if foreign objects left behind are a potential risk to aircraft engines and other components.
Magnetic Particle method of inspection is used for detecting cracks and other flaws located on the surface and subsurface of materials that are ferrous (iron or steel). I have an abundance of experience with this method due to the high number of aircraft parts and support equipment requiring this method. Parts that require magnetic particle inspections must be removed from the airframe, cleaned properly with any thick coatings of paint and/or sealant removed prior to inspection. In my four years’ experience with this type of inspection I have mostly inspected welds, wheel and brake bolts, engine parts, and support equipment used in various shops for safety control and lifting mechanisms. The parker probe is portable magnetizing particle equipment used for parts and equipment that are not able to be brought into the area of the stationary unit. I have used the parker probe on many occasions to inspect hoists, lifting adapters, and maintenance stands.
Fluorescent liquid penetrant inspection method is used for detecting discontinuities through a method of creating a visible contrast between the defect and the part by using a fluorescing penetrating liquid that when inspected under an ultraviolet light shows the pattern of the flaw. I have countless experience in this method of test on all types of metal parts and aircraft structures. I have inspected nose landing gear tow fitting arms, engine tailpipe clamps, engine blades as well as main and nose landing gear wheels with this method of testing. I have used this NDI method to detect surface cracks in metals, castings, machined parts, and weldments. This method also is also portable and can be done on the airframe. I have inspected many possible cracks on various aircraft frames with portable fluorescent liquid penetrant. I am proficient in using level 2 and level 3 fluorescent penetrant to inspect KC-135 engine components. I have used fluorescent penetrant as a back up to eddy current testing when there are areas of interest in difficult area to obtain a proper legitimate reading or as required by T.O. I am proficient at carefully and accurately processing parts through this stringent process and verifying materials to ensure accurate testing results.
Oil analysis inspection is used for analyzing oil samples drawn from engines in an effort to prevent engine failures. As an NDI technician with my experience working on F-15 aircraft I accomplished this testing method on a daily basis. I ensured the oil analysis laboratory met standards to maintain its certification. I am proficient validating aircraft forms (DD Form 2026) and all oil burns for future oil analysis trend comparison. I maintained the AETC JOAP computer based tracking and trending program with complete accuracy. I read and understood the trends of oil analysis, which is monumental in noticing certain wear metals combinations for discovering potential engine failure and malfunction of its components. I produced aircraft cross country records (DD Form 2027) to maintain engine sustainability.
Optical inspection methods can be used for a wide variety of inspections, although it is not very common due to its limited range & weak of flaw detection it is commonly used to verify defects. I am proficient at using 10x magnifiers, borescopes, videoscopes, and stereozoom microscopes to inspect aircraft and their parts. I have used a borescope to inspect KC-135 engines.
All of the equipment described above requires routine and prior to use process controls to operate equipment at optimal levels for the best inspection results. As an NDI technician I am proficient at selecting the correct equipment and tools for required maintenance. I can set-up, calibrate, use, operate and maintain all the tools and equipment required by the aircraft NDI trade in accordance with technical manuals and operating instructions specific to each piece of equipment and airframe. As an aircraft NDI technician I have used nondestructive trade math for radiography and magnetic particle inspections. In radiography I use trade math to calculate exposure corrections by first using an exposure chart and checking all the variables; film type, method of processing, brand of chemicals used for film processing, and time. When the film doesn’t meet the required density, adjustments must be made and using the trade math formula as outlined in the technical orders manual these necessary adjustments can be made. I also use exact timing and specific placement of film and the tube head when conducting a radiographic inspection to ensure best image quality possible for detecting defects and/or foreign objects. During magnetic particle inspections when magnetizing a tubular or cylindrical shaped part another trade math formula is used to ensure proper magnetism and flaws can be detected throughout the part. As an NDI technician I must use precise timing for processing parts with fluorescent liquid penetrant inspections. Dwell times, rinse times, water temperatures, part temperatures, remover time, developer dwell time, and dryer times all affect the outcome of the inspection. When I perform eddy current inspections I must ensure that the probe placement orientation to the part is precise in order detect cracks and the location in reference to the part. As aircraft age new nondestructive inspections become needed, as an NDI technician in the Air Force when such inspections become required they usually first appear as time compliance technical orders (TCTO) or if it is a safety issue it may appear as an urgent action technical order. These types of inspections must be complied with in a set amount of time. Often they require new or different equipment. I have been able to quickly adapt and proficiently learn by using my trade skills and knowledge to learn, do, and train others to accomplish these inspections. I have received numerous safety courses; radiation safety, corrosion control, CPR, self-aid buddy care, fire extinguisher use & inspection, hanger door safety, hazardous waste handling and management, precious metals recovery & control, FOD/DOP prevention, environmental awareness training, ORM, manual lifting training, fall protection/fall restrainants and harness operation, egress training, (hydrazine F-16 training) AGE familiarization/operation, fuel system/tank awareness, permit and non-permit confined spaces training, respirator care & use, hearing conservation, supervisor safety training, lock out tag out, flight line drivers training, overhead hoist operation and job safety training.
During any NDI inspections I wear the appropriate personal protective equipment required to ensure my safety as well as others and remove all finger rings, watches and any jewelry that may pose a potential safety risk. When working with the film processing chemicals, liquid penetrant chemicals, magnetic particle chemicals, and parts cleaning chemicals I wear an apron to protect clothing, gloves to protect my hands and arms, goggles to protect eyes from chemicals and harmful radiation, face shield to protect against splashing into the nose and mouth. I also use gloves when inspections under ultraviolet light to protect my hands and arms as well as maintain a safe yet effective distance to protect against burns. When using the magnetic particle unit I stand on a rubber mat to ensure grounding and confirm my setting is accurate for the parts I am inspecting prior to magnetizing parts. During radiography I ensure that all safety measures are taken prior to operations beginning and this is done in accordance with technical orders for the inspections, base regulations, AFOSH standards, and AF regulations to include wearing my thermo-luminescent detector and electronic pocket dosimeter. I am prepared to enact emergency radiation safety instructions. When I am working on aircraft I check conditions of the other maintainers working in the area and ensure that the aircraft is grounded and am capable of performing safe for maintenance. When using ladders I ensure they are in good working condition and are used in a way that is safe and effective. When working on top of aircraft I wear protective booties and coveralls when necessary. On top of aircraft inside hangars I use fall restraint equipment as well as maintaining communication with a spotter. In all my work areas I follow good housekeeping practices and comply with all AFOSH STD 91-203. When working on aircraft on the flight line I approach the aircraft at the appropriate angles and maintain visuals with aircraft commanders. Also, I follow airfield management guidelines when on the flight line and follow the driving pattern driving around aircraft and wear hearing protection as necessary. I have had zero mishaps safely on the job. I also ensure that those I am training are also using appropriate personal protective equipment and follow all regulations. As an NDI technician working for the Air Force my work is dependent upon my ability to interpret technical orders and manufacturer guides. Guidance to maintain and operate NDI equipment is located in technical order 33B-1-1 and 33B-1-2. Technical orders 1C-135-36 (or any -36 specific to airframe) is where I receive guidance on the inspections required on the different types of aircraft I am working on. Technical orders 1C-135-6 (or any -6 specific to airframe) shows all the scheduled inspections for that particular airframe to include scenario specific inspections such as hard landings or over torque inspections. Technical orders 33B-1-211 is a manual that explains safety for using battery operated equipment around ground aircraft. Technical Orders 00-25-252D is my guidance when complying with the weld certification process and inspections. Technical Orders 33B2-7-11 is guidance for operating and maintaining eddy current units. Technical orders 33B3-3-19-1 is for operating and maintains the radiographic interlock system. Technical orders 33P2-61-1 is for maintaining and operating the magnetic particle stationary unit. For signing off forms and sending jobs to other shops the work unit codes are located in the technical orders 1C-135-06 (or any -06 specific to airframe). I am familiar with 00-5-1 Air Force T.O. systems, 00-020-1 for aircraft forms and SE, 11H4-7-15-1 for survey meters, 33B3-31-11 for Lorad, 35D6-1-06 aircraft slings, AFOSH standards, AF regulations, and base specific regulations to comply with chemical usage, storage, and disposal, safety, programs and procedures, facilities, and use of any and all equipment located in the work area to include offices. As an NDI technician I have a good working knowledge of metals. In order to properly inspect parts I must ensure that I know what material the part is made of to determine the best method of inspection to use to find the type of flaw I am searching for. For example in order to perform a magnetic particle inspection the part must be ferrous or it cannot be magnetized. To test this, I place a magnet on it to see if it attracts. Certain metals that I encounter daily are easy for me to identify because of particular characteristics like weight, look, feel, taste, and smell of the metal material. If I am not certain of the metal I can look up the part/item up in a technical order or use eddy current for metal sorting. If the metal is similar to one of the standards available (I have worked with standards for aluminum, steel and titanium) I can compare it to that standard. When using radiography if you choose the wrong setting for a particular metals it will be evident after the film has been processed by the image or lack of image it produces. Metals have variations in colors, grains, and porosity making them prone to different types and locations of discontinuities. When using NDI test equipment such as eddy currents you can tell by certain erroneous signals if a metal is different than expected, changing your probe and/or frequency settings on the unit you can quickly figure out what type of metal you are working with.
Evident Ultrasonic Inspection Equipment