Thanks for asking the Apple Support Communities for help with your iPad not charging. If your iPhone, iPad, or iPod touch won't charge - Apple Support
If you have gone through the entire article and it still will not charge, the article states:
If your device still won’t power on or charge, take your device, charging cable, and charging adapter to an Apple Retail Store or Apple Authorized Service Provider for evaluation. You can also contact Apple Support.
Thanks and have a great day.